Cincinnati Reds relief pitcher Ian Gibaut (arm) had anterior interosseous nerve-release surgery on his right arm on Thursday, but manager David Bell said the hope is that he's still able to return this season. Gibaut had been dealing with right-arm issues since late February and will now be out even longer. The 30-year-old is currently on the 60-day injured list and won't be able to rejoin Cincinnati's bullpen until some point in the second half of the season. The former 11th-round pick by the Tampa Bay Rays in 2015 out of Tulane was a key part of the Reds' bullpen last year, going 8-4 with a 3.33 ERA (4.07 FIP) and 1.28 WHIP with a career-high three saves, 28 walks and a career-high 69 strikeouts in 75 2/3 innings over 74 relief appearances.

San Francisco Giants outfielder Jung Hoo Lee and third baseman Matt Chapman are both receiving the day off for Thursday's series finale in Colorado against the Rockies. Austin Slater is starting in center field and is batting sixth, while Wilmer Flores is manning the hot corner and is batting cleanup against Rockies right-hander Cal Quantrill. Lee is currently riding a six-game hitting streak but will take a seat for the first time since April 24. Chapman has cooled off at the plate after a hot start in the first month of the season. It's his first day of rest since April 20. Flores is hitless in four career at-bats against Quantrill and is hitting just .213 (19-for-89) on the year with one home run and 13 RBI in 32 games, but he'll be a DFS sleeper on Thursday in the cleanup spot at hitter-friendly Coors Field.

Tampa Bay Rays right-hander Jacob Waguespack (shoulder) suffered a right-shoulder injury in his last outing with Triple-A Durham that isn't expected to require a significant stint on the shelf. Instead of leaving him on the minor-league injured list, the Rays recalled him and placed him on the 15-day IL on Monday. If Waguespack were to suffer a setback, it would required him to be moved to the 60-day IL to clear a spot on the 40-man roster. This way, if he's eventually put on the 60-day IL, he will be eligible to return after serving the minimum 60 days. The 30-year-old made four appearances (one starts) for the Rays before his injury and allowed seven runs (six earned) on 13 hits (one homer) while walking 10 and striking out 11 in just 10 innings.

Tampa Bay Rays right-hander Ryan Pepiot (leg) was placed on the 15-day injured list on Wednesday with a lower left-leg contusion after getting hit by a comebacker in Sunday's outing against the New York Mets, but he played catch on Wednesday and said multiple times he expects he'll be ready when he's eligible to return. X-rays and a CT scan showed no fracture in Pepiot's left leg, but follow-up imaging showed there was more of a bruise on his bone than anticipated, and the Rays decided to play it safe. The 26-year-old will be able to return to the team on May 21, so fantasy managers should expect him back by then. In his first seven starts (36 2/3 innings) for the Rays, Pepiot has gone 3-2 with a solid 3.68 ERA and 0.93 WHIP with 41 strikeouts. Keep him stashed with a quick return expected.

The Los Angeles Angels acquired infielder Luis Guillorme from the Atlanta Braves on Thursday in exchange for cash considerations, according to sources. The 29-year-old had signed a one-year, $1.1 million deal with the Braves in the offseason. Guillorme only appeared in nine games for Atlanta, going 3-for-20 (.150) with three RBI in 21 plate appearances. A backup infielder with the Braves, Guillorme will now have a much better shot at playing time in Anaheim, mainly at third base with Anthony Rendon (hamstring) out until at least late June and probably longer. Guillorme can provide infield versatility and gives the Halos a nice contact hitter from the left side, but his fantasy impact will likely be limited to AL-only leagues, depending on how much he actually plays. He's a career .258/.341/.331 hitter with only five homers, 51 RBI and four steals in seven big-league seasons.