MLB Player News

De Leon (elbow) threw 10-15 pitches in a simulated game Monday, Juan Toribio of MLB.com reports.

Toribio adds that De Leon remains over a month away from returning to game action at the big-league level, but Monday's level of activity represented the latest step in his path back from Tommy John surgery. The right-hander, who's just over a year removed from the procedure, had been building up his arm strength in batting practice sessions prior to Monday.

Honeywell (elbow) threw 10-15 pitches in a simulated game Monday, Juan Toribio of MLB.com reports.

Toribio adds that Honeywell remains over a month away from returning to game action at the big-league level, but Monday's level of activity represented the latest step in his path back from Tommy John surgery. The right-hander had been building up his arm strength in batting practice sessions prior to Monday, and it remains to be seen what the next step in his rehab will be.

Fulmer was optioned to Triple-A Charlotte on Monday.

Fulmer's time with the big-league club lasted a matter of hours, as he'd just been recalled earlier in the day. He gave the White Sox three decent innings of relief during those hours, allowing one run on three hits and two walks while striking out three against the Rays. Ervin Santana is expected to be called up ahead of his scheduled start Tuesday in a corresponding move.

Armstrong (oblique) will throw his first of a few rehab outings for Triple-A Tacoma within the next day or two, Greg Johns of MLB.com reports.

Armstrong has been battling an oblique strain since mid-March. His rehab timeline appears to put him roughly a week from returning to game action, though a specific target date has not been given by the Mariners.

Burke is heading to the injured list at Double-A Frisco due to a blister, Evan Grant of The Dallas Morning News reports.

The injury is unlikely to keep Burke out for too long or significantly affect his development as long as it's handled carefully. The 22-year-old pitched a scoreless five innings for Frisco on Thursday, his first and only start of the young season.

Treinen (0-1) allowed an earned run on two hits and four walks over 1.1 innings in a loss to the Astros on Sunday. He also recorded a strikeout and was charged with his first blown save of the season.

The normally near-automatic closer was handed the keys in the eighth with a man on and the Astros within a run after a Tony Kemp solo home run. Treinen allowed a game-tying sacrifice fly to Alex Bregman before getting out of the frame, and he eventually issued a game-winning bases-loaded walk to Jose Altuve in the ninth after experiencing some uncharacteristic control problems. Prior to Sunday's stumble, Treinen had started the season off in trademark fashion, allowing just three hits over 6.2 scoreless frames across five appearances and notching three saves in as many opportunities.

Mayza struck out two in a perfect seventh inning during Sunday's loss to Cleveland.

The left-hander had some trouble finding the plate to open the season, walking five batters in his first three innings over four appearances, but Mayza's now posted a 4:0 K:BB over his last two frames. If he can keep stringing together outings like that, the 27-year-old should start seeing more high-leverage opportunities.

Jimenez allowed two hits but pitched a scoreless eighth inning in Sunday's 3-1 win over the Royals to record a hold.

Jimenez allowed three earned runs in his second appearance of the season, but the 24-year-old has otherwise kept the opponent off the board in five games this season, and he has three holds to show for it. Detroit closer Shane Greene is off to an amazing start, with seven saves and a 0.00 ERA through 10 team games, so Jimenez is unlikely to supplant the incumbent anytime soon, though Greene is a trade candidate if the Tigers begin to struggle.

Fulmer was recalled by the White Sox on Monday.

Fulmer has been very poor through parts of three major-league seasons, recording a 6.68 ERA and a 58:44 K:BB in 67.1 innings. The White Sox have converted him to the bullpen in hopes on seeing a significant improvement. He'll fill the roster spot vacated by outfielder Ryan Cordell, who was optioned Sunday.

Hand secured his fourth save of the season after striking out two over 1.2 innings Sunday against Toronto.

Hand was called upon a little earlier than usual in the series finale, but he induced a double-play ball in the eighth inning to escape a jam and retired the final three batters in the ninth on the way to a 3-1 victory. The 29-year-old surrendered his first run of the season in his last appearance Thursday against Toronto but escaped unscathed Sunday afternoon.