Guerrero Jr. Sidelined by Hamstring Tightness, May Miss Game

WHO:

MLB.com - Jesús Sánchez went 2-for-3 with a pair of singles and was hit by a pitch during Triple-A Buffalo’s 5-4 win over Lehigh Valley.

MLB.com - Tyler Glasnow and Blake Treinen threw live batting practice sessions.

MLB.com - Edwin Díaz was reinstated from the 10-day injured list on his bobblehead night.

MLB.com - Charlie Barnes was designated for assignment to make room for Díaz on the roster.

NY Post - Vladimir Guerrero Jr. left the game with right hamstring tightness.

MLB.com - Manager John Schneider stated, “I think Kaz can play over there,” regarding Kazuma Okamoto's ability to play first base if Guerrero's return is not immediate.

MLB.com - Edwin Díaz was reinstated from the 10-day injured list on his bobblehead night.

MLB.com - Charlie Barnes was designated for assignment to make room for Díaz on the roster.

MLB.com - Kazuma Okamoto hit his 24th home run after entering for Guerrero.

MLB.com - Shane Bieber, who walked six batters, set a franchise record for most walks issued in an inning.

MLB.com - Manager John Schneider stated, “I think Kaz can play over there,” regarding Kazuma Okamoto's ability to play first base if Guerrero's return is not immediate.

MLB.com - Vladimir Guerrero Jr. first felt tightness after legging out an infield single in the top of the third inning.

MLB.com - Kazuma Okamoto replaced Guerrero at first base.

MLB.com - Shane Bieber, Blue Jays right-hander.

MLB.com - George Springer, Blue Jays player.

MLB.com - Manager John Schneider stated, “I think Kaz can play over there,” regarding Kazuma Okamoto's ability to play first base if Guerrero's return is not immediate.

MLB.com - Vladimir Guerrero Jr. first felt tightness after legging out an infield single in the top of the third inning.

MLB.com - Manager John Schneider stated, “I think Kaz can play over there,” regarding Kazuma Okamoto's ability to play first base if Guerrero's return is not immediate.

MLB.com - Manager John Schneider stated, “Kaz can play over there,” referring to Kazuma Okamoto's ability to play first base.

MLB.com - Vladimir Guerrero Jr. has played in 103 of Toronto’s 108 games this season.

MLB.com - Vladimir Guerrero Jr. is a six-time All-Star.

MLB.com - Kazuma Okamoto replaced Guerrero at first base.

NY Post - Toronto Blue Jays first baseman Vladimir Guerrero Jr.

MLB.com - Blue Jays manager John Schneider

MLB.com - Kazuma Okamoto, who replaced Guerrero

MLB.com - Shane Bieber, Blue Jays right-hander

MLB.com - George Springer, Blue Jays player

WHAT:

MLB.com - Sánchez's rehab game was his first with Buffalo after playing one game for Toronto’s Florida Complex League club and two with Single-A Dunedin.

MLB.com - Glasnow completed two innings in his live BP session and reported no residual issues, stating, "I felt fine."

MLB.com - Treinen faced hitters off a mound for the first time since landing on the injured list on June 20 due to right elbow inflammation.

MLB.com - Díaz allowed just two runs over 5 2/3 innings while striking out 11 batters during his rehab appearances.

MLB.com - Díaz's fastball velocity steadily climbed back into the 96-98 mph range during his rehab.

MLB.com - Guerrero is currently slashing .265/.345/.357 with six home runs this season, which is nearly 100 points off his previous low for a single season.

MLB.com - Guerrero will probably be out of the lineup on Wednesday.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Díaz had surgery in April to remove loose bodies from his right elbow and had a successful rehab, allowing just two runs over 5 2/3 innings while striking out 11 batters in seven rehab appearances.

MLB.com - Chris Sale allowed two hits and notched nine strikeouts over six scoreless innings against the Mets, maintaining a 2.08 ERA.

MLB.com - Toronto's record dipped to 49-59 after the loss.

MLB.com - Guerrero is currently slashing .265/.345/.357 with six home runs this season, which is nearly 100 points off his previous low for a single season.

MLB.com - Guerrero will probably be out of the lineup on Wednesday.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Vladimir Guerrero Jr. is currently slashing .265/.345/.357 with six home runs this season, which is nearly 100 points off his previous low for a single season.

MLB.com - Bieber's ERA spiked to 5.74 after the game.

NY Post - Guerrero left the game with right hamstring tightness.

NY Post - Guerrero was replaced in the bottom of the fourth inning.

MLB.com - Schneider stated, “He checked out pretty good, and we'll see how he is tomorrow,” regarding Guerrero's condition after he left the game.

MLB.com - Schneider decided to be cautious with Guerrero to avoid worsening the injury.

MLB.com - Bieber struggled with grip due to heat and sweating.

MLB.com - Guerrero will probably be out of the lineup on Wednesday.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Vladimir Guerrero Jr. is currently slashing .265/.345/.357 with six home runs this season, which is nearly 100 points off his previous low for a single season.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Bieber's ERA spiked to 5.74 after the game.

MLB.com - Guerrero grounded into a double play and reached on an infield single in his two at-bats before leaving the game.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Vladimir Guerrero Jr. has played in 103 of Toronto’s 108 games this season and is currently slashing .265/.345/.357 with six home runs.

MLB.com - Kazuma Okamoto hit his 24th home run in the fifth inning after entering for Guerrero.

MLB.com - Shane Bieber walked six batters and retired only two in his outing, setting a franchise record for most walks issued in an inning.

MLB.com - Bieber's ERA spiked to 5.74 after the game.

NY Post - Guerrero left the game with right hamstring tightness.

NY Post - Guerrero was replaced in the bottom of the fourth inning.

MLB.com - Guerrero will probably be out of the lineup on Wednesday.

MLB.com - Kazuma Okamoto hit his 24th home run after entering for Guerrero.

MLB.com - Bieber walked six batters and retired only two in his outing.

MLB.com - Bieber set a franchise record for most walks issued in an inning.

MLB.com - Toronto's record dipped to 49-59 after the loss.

WHERE:

NY Post - The game took place at Nationals Park in Washington.

MLB.com - The Blue Jays are based in Toronto.

NY Post - The game took place at Nationals Park in Washington.

MLB.com - The Blue Jays are based in Toronto.

WHEN:

MLB.com - The targeted return for Sánchez has been the end of this month.

MLB.com - The 2026 Trade Deadline is on August 3 at 6 p.m. ET.

MLB.com - The game was an 8-6 loss to the Nationals.

MLB.com - The 2026 Trade Deadline is on August 3 at 6 p.m. ET.

WHY:

MLB.com - Manager Dave Roberts stated that removing bone chips from Díaz's elbow resolved the root cause of his early-season struggles.

MLB.com - Schneider stated, “It was a little sore, and he wanted to stay in, and it was my call just to be careful with him and not have anything worse happen.”

MLB.com - Manager Dave Roberts stated that the removal of bone chips from Díaz's elbow resolved the root cause of his early-season struggles.

MLB.com - Schneider stated, “It was a little sore, and he wanted to stay in, and it was my call just to be careful with him and not have anything worse happen.”

MLB.com - Schneider stated, “He checked out pretty good, and we'll see how he is tomorrow,” regarding Guerrero's condition after he left the game.

MLB.com - Schneider decided to be cautious with Guerrero to avoid worsening the injury.

MLB.com - Schneider stated, “He checked out pretty good, and we'll see how he is tomorrow,” regarding Guerrero's condition after he left the game.

MLB.com - Manager John Schneider stated, “He checked out pretty good, and we'll see how he is tomorrow,” regarding Guerrero's condition.

MLB.com - Manager John Schneider stated, “He checked out pretty good, and we'll see how he is tomorrow.”

MLB.com - Manager John Schneider stated, “It was a little sore, and he wanted to stay in, and it was my call just to be careful with him and not have anything worse happen.”

MLB.com - Schneider decided to be cautious with Guerrero to avoid worsening the injury.

MLB.com - Bieber struggled with grip due to heat and sweating.

HOW:

MLB.com - Glasnow noted he adjusted his mechanics down the mound during his shutdown to keep his hips in a better position and prevent future back tightness.

MLB.com - Díaz built his arm strength back up through seven rehab appearances across the Arizona Complex League, Single-A Ontario, and Triple-A Oklahoma City.

MLB.com - Sale's ERA ranks third in the Majors, trailing only Jacob Misiorowski and Cam Schlittler.

MLB.com - Bieber threw only 15 of 42 pitches for strikes during his outing, struggling with grip due to heat and sweating.

MLB.com - Guerrero first felt tightness after an infield single in the third inning.

MLB.com - Bieber threw only 15 of 42 pitches for strikes during his outing.

In a strong showing, Jesús Sánchez went two-for-three with a pair of singles and was hit by a pitch during Triple-A Buffalo’s 5-4 victory over Lehigh Valley, marking his first game with Buffalo after a brief stint with Toronto’s Florida Complex League and Single-A Dunedin. Meanwhile, Tyler Glasnow completed two innings in his live batting practice session, reporting no issues and expressing that he felt fine, while Blake Treinen faced hitters off a mound for the first time since being placed on the injured list due to right elbow inflammation on June 20. Sánchez is targeting a return by the end of this month, and Glasnow has adjusted his mechanics to maintain better hip positioning and prevent future back tightness.