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Tampa Bay Rays right-hander Tyler Glasnow blamed Major League Baseball’s crackdown on pitchers applying foreign substances to the ball for his partial ulnar collateral ligament tear.

Glasnow said the only substance he’d ever used was sunscreen — as opposed to something like Spider Tack, one particularly sticky substance in the league’s crosshairs — and he decided to stop using it before MLB began its increased enforcement of foreign substance rules.



Glasnow left Monday’s start, a 5-2 win over the White Sox, after just four innings and 53 pitches. The Rays announced Tuesday the starter had a flexor strain as well as the UCL tear and placed him on the 10-day injured list.

“I switched my fastball grip and my curveball grip,” Glasnow told reporters. “I had to put my fastball deeper into my hand and grip it way harder. Instead of holding my curveball at the tip of my fingers, I had to dig it deeper into my hand. I’m choking the s– out of all my pitches.”

Glasnow said his elbow pain dates back to June 8 in a start against the Washington Nationals, in which he said he pitched without using any substances on the ball.

“I woke up the next day and I was sore in places I didn’t even know I had muscles in,” he said.

Tyler Glasnow: ‘Truly Believe” It Caused Injury

Glasnow continued by railing against the timing of MLB’s decision to ramp up enforcement.

“Do it in the offseason. Give us a chance to adjust to it,” he said. “But I just threw 80 innings, then you tell me I can’t use anything in the middle of the year. I have to change everything I’ve been doing the entire season. I’m telling you I truly believe that’s why I got hurt.”

He also claimed that at a union meeting with 36 reps, “not a single person,” including hitters, said they had a problem with pitchers using sunscreen and rosin. ESPN reported that pitchers are upset the commonly used sunscreen-and-rosin combo will be policed the same as Spider Tack.



“Sunscreen and rosin is apparently the same as Spider Tack,” Glasnow said. “All right, I guess I’ll adapt and learn. And the only thing I learned was that it hurts to throw a ball in the middle of the season from having something to not having something.”

A timetable for Glasnow’s return will be determined after further medical evaluation. Tampa Bay hopes he can rehab the arm and avoid Tommy John surgery.

In 14 starts this season, Glasnow is 5-2 with a 2.66 ERA. He has 123 strikeouts in 88 innings.

In 104 games — 65 starts — with the Pittsburgh Pirates (2016-18) and Rays, Glasnow is 20-20 with a 4.04 ERA.

In a corresponding roster move, the Rays recalled infielder Mike Brosseau from Triple-A Durham. He will start at second base and bat fifth Tuesday night against the host Chicago White Sox.

–Field Level Media (@FieldLevelMedia)