Ryan Pressly allowed a run over two mop-up innings in Saturday's 12-5 loss against the Red Sox.
The Twins plucked Pressly from the Red Sox with the fourth pick in last winter's Rule 5 Draft. He posted a 5.38 ERA in 103 2/3 innings last season between High- and Double-A, but has been a pleasant low-leverage surprise for the Twins thus far, logging a 1.83 ERA and 1.42 WHIP over 19 2/3 innings. His peripherals aren't good -- including a 13/10 K/BB rate -- and his ERA won't end anywhere close to where it is now, but owners in extremely deep AL-only leagues may want to take a look if they need an injury replacement in the 'pen.
Scott Diamond was hammered for six earned runs in 4 1/3 innings as the Twins lost to the Red Sox on Saturday.
It was the second straight outing in which he allowed six runs. Diamond showed some very positive signs in his first two starts of May, but he has quickly fallen back to earth. The left-hander now has a 4.99 ERA and 1.44 ERA in 39 2/3 innings this season and is not relevant outside of deep AL-only fantasy leagues.

Joe Mauer (back) returned to the Twins' lineup Saturday.
Mauer was held out of Friday's game with lower back stiffness, but it was never a major concern. He's batting in the No. 2 spot Saturday and will serve as the Twins' designated hitter against the Red Sox.
Vance Worley showed some signs of life Friday, as he limited the Red Sox to one unearned run over six innings as part of a no-decision.
Worley gave up an RBI single to David Ortiz in the first inning, but he held the Red Sox off the board the rest of the way. All told, he allowed six hits and three walks while striking out one. Still, Worley owns an ugly 6.20 ERA through nine starts and will need to get more swings-and-misses to be an asset in fantasy leagues.
Josh Willingham was hitless in four at-bats Friday and is hitting .198 for the year.
Willingham is hitting just .125 (6-for-48) this month and hasn't homered since April 29. It's fair to assume that his recent wrist soreness is a factor. We're not expecting 35 home runs again, but this might not be a bad time to buy low.
Twins assistant general manager Rob Antony said Friday that Rich Harden's rehab has been "slow" and "not very well to be honest".
Harden felt soreness in his surgically-repaired shoulder while throwing a few weeks ago and hasn't progressed much since. It's starting to look like a longshot that the oft-injured right-hander will ever make an impact for the Twins.
Twins released LHP Rafael Perez.
Perez, who underwent shoulder surgery last September, had been pitching at Triple-A Rochester in recent weeks, compiling a 2.25 ERA, 1.25 WHIP and 2/3 K/BB ratio over his first four innings of work. The 31-year-old lefty could draw some interest from teams looking for bullpen help.