MLB Player News

The Rockies claimed Castano off waivers Tuesday and optioned him to Triple-A Albuquerque.

Castano was designated for assignment by the Mariners last week but will maintain a spot on a 40-man roster with the Rockies. The right-hander opened this season at the Triple-A level and has given up one earned run with a 4:1 K:BB across 6.1 innings.

Waldron is slated to start Thursday's game against the Rockies at Coors Field.

Shelved to begin the season while completing his recovery from hemorrhoid surgery, Waldron returned from the injured list last week following a dominant minor-league rehab stint during which he tossed 12 scoreless frames and posted a 12:1 K:BB over three starts for Triple-A El Paso. The right-hander stepped into the San Diego rotation but was unable to carry over his success from the minors, taking a loss Friday against the Angels while yielding six earned runs on eight hits and one walk over 3.2 innings. Though Waldron will be handed another start, he'll be difficult to rely upon for fantasy purposes while pitching in hitter-friendly Colorado.

The Twins recalled Rojas from Triple-A St. Paul on Tuesday.

The 23-year-old lefty opened the campaign on St. Paul's injured list due to a hamstring issue, but he was activated April 11 and has fired six scoreless frames in his first two Triple-A appearances. The Twins have an opening in their starting rotation Wednesday against the Mets, and Rojas is a candidate to fill that spot after being called up for his first taste of the big leagues.

Lowder (3-1) picked up the win Monday against the Rays after giving up one run on five hits and two walks with three strikeouts over six innings.

The right-hander delivered a second straight quality start and third overall of the campaign, while limiting Tampa Bay to a single first-inning run during Monday's comfortable victory. Lowder has already set a career high with three wins and has enjoyed a productive start to the campaign with a 3.10 ERA, 1.14 WHIP and 18:9 K:BB across 29 innings.

Meyer didn't factor into the decision in Monday's 5-3 win over the Cardinals, giving up two runs on three hits and two walks over 5.1 innings. He struck out eight.

The eight K's were a season high, and Meyer saw a season-high workload with 5.1 innings and 91 pitches (59 strikes). The right-hander is beginning to find a groove, posting a 3.52 ERA and 17:6 K:BB over his last three starts and 15.1 innings, but he has yet to put together a truly dominant outing despite the fact that his slider is producing an eye-popping 50.8 percent whiff rate in the early going. Meyer will look to carry his momentum into his next start, which lines up to come on the road this weekend in San Francisco.

Varland struck out three over 1.1 perfect innings Monday to record his third hold of the season in a 5-2 win over the Angels.

The right-hander has been the Blue Jays' best reliever through the first month of the season, producing a 0.00 ERA, 0.89 WHIP and dominant 19:3 K:BB through 12.1 innings while allowing just one hit so far on his high-90s four-seamer. Jeff Hoffman righted the ship a bit in Monday's win, striking out the side himself in the ninth while picking up his third save, but the Toronto closer's job security remains low given his three blown saves, 6.97 ERA and 1.94 WHIP. If Hoffman does get removed from the ninth, Varland has positioned himself to be the next man up in save situations.

Valera will undergo an MRI on his right elbow after exiting his most recent start for High-A Greenville last Thursday, Tim Healey of The Boston Globe reports.

Valera missed three months last season with right elbow inflammation. The 19-year-old was placed on Greenville's 7-day injured list Friday, and while the Red Sox seem optimistic that he's not dealing with structural damage to his elbow, more will be known once the imaging results are in. Valera boasts a 1.93 ERA and 17:4 K:BB over 9.1 frames so far this season with Greenville.

Atlanta recalled Dodd from Triple-A Gwinnett on Tuesday.

Dodd picked up a three-inning save in his lone appearance out off the Atlanta bullpen earlier this month. He'll provide the team's relief corps with some length.

Tolle had a start skipped at Triple-A Worcester over the weekend as part of a contingency plan for the Red Sox, who may need to call him up for a spot start this week, Chris Cotillo of MassLive.com reports.

The Red Sox didn't need to call up Tolle for their recent four-game set versus the Tigers, but he could be needed as a potential replacement in the rotation for Sonny Gray, who is expected to land on the 15-day injured list after suffering a hamstring injury during his start in Monday's 8-6 win over Detroit. Tolle is the logical candidate to replace Gray, who's next turn through the rotation was set for Saturday in Baltimore.

Lodolo (finger) is scheduled to throw a three-inning simulated game Tuesday, MLB.com reports.

Lodolo, who threw a two-inning sim game last Friday, will increase his activity Tuesday. The left-hander has been dealing with a blister on his left index finger since late in spring training.