Oakland reliever Dan Otero is the first player added to the Phillies roster on the Matt Klentak era of Phillies baseball. Otero was claimed off the waiver wire to see if he can make a contribution to the bullpen in 2016 possibly.
I say possibly because Otero was sent down by the Oakland A's on three occasions to Triple A last season, and he turned in his worst year as a pro last year for the Athletics as well. Otero only pitched 46.2 innings for the A's and gave up 35 ER and 7 HR over that span, his record was 2-4 with a 6.75 ERA. Otero had one really bad outing for the A's last year against the Orioles, he gave up 8 H and 8 R in only 1.1 IP (27 total pitches) in an 18-2 loss to the O's last year on 8-16-2015 that could have skewed his overall numbers for the season.
Otero had a 2015 that was very similar to Justin DeFratus, who the Phillies jettisoned from the team after a similarly bad season last year. DeFratus had pitched for 5 seasons with the Phillies, but last year was his worst, in 80 innings he gave up 49 ER and 9 HR. Looking at a comparison against Otero's record last year, that doesn't look all that bad.
Here's a chart that shows what pitches Otero has pitched over his career:
Otero is primarily a sinker pitcher and fourseam fastball pitcher, his fastball usually results in flyballs and that could be a reason why Otero gave up some many homeruns in 46 innings last year. The Phillies coaching staff will be tasked with figuring out how Otero can improve upon that.