Mazzoni was outrighted to Triple-A Iowa on Monday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

Mazzoni will report back to the Iowa Cubs after passing through waivers untouched over the weekend. The 28-year-old owns a shiny 1.04 ERA across 8.2 innings with the Cubs this year, though his 4.46 ERA across 38.1 innings with Triple-A Iowa is more likely a true indicator of his skill level.

Mazzoni was designated for assignment by the Cubs on Thursday.

EDGE Analysis

Mazzoni was cast off the 40-man roster in order to make room for the recently-acquired Bobby Wilson, who was traded to the club from Minnesota for Chris Gimenez on Thursday. In eight appearances with the big-league team this year, Mazzoni has logged a 1.04 ERA but failed to display any signs of effectiveness during brief stints with the Padres the past few seasons.

Mazzoni was optioned to Triple-A Iowa on Sunday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

With the Cubs officially adding the newly acquired Cole Hamels to the active roster, Mazzoni was the chosen casualty. Mazzoni's stay with the big club lasted all of one day, with the right-hander tossing a scoreless inning in Saturday's 6-2 loss to the Cardinals.

Mazzoni was called up from Triple-A Iowa on Saturday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

Mazzoni will be deployed in low-leverage situations while with the club. Across seven appearances for Chicago earlier this year, he's logged a 1.17 ERA and 1.30 WHIP with five strikeouts in 7.2 innings of relief. In a corresponding move, Alec Mills was sent back down to Iowa after pitching two innings during Friday's contest.

Mazzoni was optioned to Triple-A Iowa on Wednesday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

With Brandon Morrow (back) coming off the disabled list, Mazzoni was sent down to clear a spot on the 25-man roster. He should continue to serve as organizational bullpen depth going forward.

Mazzoni was recalled from Triple-A Iowa on Sunday, Alyson Footer of MLB.com reports.

EDGE Analysis

With Luke Farrell getting optioned down to Iowa and Rob Zastryzny (back) ending up on the 10-day DL, the Cubs needed some bullpen depth to wrap up their weekend series with the Reds. Mazzoni returns to the MLB roster with a 1.17 ERA and 1.30 WHIP across 7.2 innings of work with the Cubs this season.

Mazzoni was optioned to Triple-A Iowa on Monday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

Mazzoni tossed two innings during Sunday's loss to the Pirates -- allowing one run on two hits and two walks while striking out one -- so the Cubs will shuttle him back to the minors in exchange for a fresh bullpen arm (Anthony Bass). The 28-year-old, who hadn't allowed a run prior to Sunday's outing, now owns a solid 1.17 ERA across 7.2 big-league frames. He should continue to jump between Iowa and the majors as bullpen help is needed.

Mazzoni was recalled from Triple-A Iowa on Wednesday, Jesse Rogers of ESPN.com reports.

EDGE Analysis

Carl Edwards was placed on the disabled list with shoulder inflammation, so the Cubs needed a fresh arm for the bullpen. Mazzoni has logged 17.2 MLB innings over the last four seasons, giving up a whopping 32 earned runs over that span. He has a 1.25 ERA, 1.06 WHIP and 22 strikeouts in 21.2 innings at Triple-A this season.

Mazzoni was sent down to Triple-A Iowa on Tuesday, Carrie Muskat of MLB.com reports.

EDGE Analysis

Mazzoni was up for just one day, tossing one scoreless inning. He has a decent chance to appear throughout the season in a low-leverage role. Rob Zastryzny was called up to take his place in the bullpen.

Mazzoni was recalled from Triple-A Iowa on Monday, Mark Gonzales of the Chicago Tribune reports.

EDGE Analysis

Mazzoni will join the Cubs for the first time all season in order to provide a fresh bullpen arm after manager Joe Maddon burned through seven relievers during Sunday's extra-innings loss to the Cardinals. The 28-year-old owns a solid 2.31 ERA and 12:1 K:BB through 11.2 innings with Triple-A Iowa this season, but his ugly numbers at the major-league level (32 earned runs across 16.2 innings) will likely limit him to low-leverage work during his time with Chicago. Luke Farrell was optioned to Iowa in a corresponding move.