Joe Kelly threw a football to improve his curveball

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Joe Kelly has impressed onlookers in Cardinals camp with his improved curveball and Derrick Goold of the St. Louis Post Dispatch writes that the right-hander credits throwing a football during the offseason for the change:

Kelly said by throwing the football he was able to find an arm slot that he could consistently use and a shorter arm swing that adds to his deception. He was able to condition his hand’s release for better control. He shifted his usual grip on the curve to meet the new arm slot.The righty acknowledged that he worried about “losing velocity” by making the change. But he hasn’t.

Kelly stepped into the Cardinals’ rotation down the stretch last season and was fantastic, going 9-2 with a 2.09 ERA, but St. Louis’ impressive starting pitching depth means he’s not even guaranteed to be a starter this season. Goold notes that Kelly is one of seven starters competing for four openings behind Adam Wainwright, so that’s where the improved curveball could factor in.

And, really, Sam Bradford’s gripon the Rams’ starting job can’t be that secure anyway.

Yankees halt Giancarlo Stanton’s rehab due to calf tightness

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There was some thought that Yankees outfielder Giancarlo Stanton would soon be activated from the injured list. Stanton has been out since the beginning of April due to biceps and shoulder injuries. It will be a little while longer.

The Yankees announced on Wednesday that Stanton’s rehab has been halted due to tightness in his left calf. Stanton was scratched from Tuesday’s rehab game with High-A Tampa due to tightness around his left calf and knee, so this news didn’t pop up out of nowhere.

Stanton recorded a pair of singles and seven walks in 15 trips to the plate in the only three games he played this season, all against the Orioles. Durability has always been a concern for the 29-year-old, but he managed to play in 159 games for the Marlins in 2017 and 158 for the Yankees last year. He’s in the fifth year of a 13-year, $325 million contract originally signed with the Marlins.