Signed to a minor league contract by the Jays on December 9, Coello last pitched in the majors for the Red Sox in 2010. In 17 games for Las Vegas this season, the 27-year-old has compiled a 3.22 ERA/3.94 FIP with 38 strikeouts and just 26 hits in 36 1/3 innings. Technically a three-pitch pitcher, Coello favors his 90 mph fastball and will occasionally mix in a low-80′s changeup.

In addition to losing his handle on the strike zone periodically, Coello is a much better pitcher against right-handed hitters — two things that I alluded to in an article back on March 5 after seeing Coello pitch in a spring training game.

“Jays reliever Robert Coello didn’t have the kind of day that he wanted in the bottom of the seventh, as he gave up a wind-carried solo home run to Pirates hitter Nick Evans before walking Yamaico Navarro and hitting Jordy Mercer,” I wrote in the article. “Coello, throwing hard inside to right-handed hitters, finished the day having allowed two earned runs on two hits with a walk, though it could have been much worse.”

Right-hander Robert Coello is the latest reliever to be called up to the Blue Jays. (Derick E. Hingle-US PRESSWIRE)

It should be noted that while Coello has walked nine batters in his last three outings and 17 in 36 innings this season, he’s been stretched out from making one-inning relief outings at the end of April to five-inning starts as recently as May 28.

A former 20th round pick by the Cincinnati Reds in 2004, Coello spent the entire 2011 season in the Chicago Cubs’ minor league system, managing a 4.19 ERA in 34 games (116 innings) split between Double-A Tennessee and Triple-A Iowa.

- JM