Castillo (5-8) picked up the win in Friday's 6-3 victory over the Cubs, allowing three runs on four hits and a walk over 5.2 innings while striking out five.

EDGE Analysis

The right-hander fell just short of a quality start, getting the hook after hitting Javier Baez with a pitch to put runners at first and second with two outs in the sixth inning of a 4-3 game, but Castillo was still able to notch his first win in almost a month. He'll carry a 5,70 ERA into his next outing Wednesday in Atlanta.

Castillo (4-7) struck out 10 Cardinals batters Saturday but still picked up the loss, allowing five runs over six innings on four hits and three walks.

EDGE Analysis

Included in the damage against Castillo were two first-inning homers, giving him 15 homers allowed in 73 innings. Castillo now has a 5.79 ERA and 1.42 WHIP, and a big reason why might be his declining velocity. After averaging 97.5 MPH on his fastball last season, his average fastball this year is 95.3 MPH.

Castillo will make his next start Sunday against the Padres, C. Trent Rosecrans of The Athletic Cincinnati reports.

EDGE Analysis

Castillo wasn't initially in line for two starts heading into the current week, but the Reds' pitching schedule changed after Homer Bailey was banished to the bullpen following another poor outing Monday against the Diamondbacks. Bailey had been in line to start the series finale in San Diego, but that assignment will now fall to Castillo with the Reds taking advantage of Thursday's off day to get by with a four-man rotation for the time being. The adjustment looks like a favorable one for Castillo, who now has the luxury of facing an anemic Padres offense at one of the pitcher-friendlier environments in all of baseball.

Castillo (4-5) allowed five runs (four earned) on four hits in a loss to Arizona on Tuesday, striking out six and walking three in five innings.

EDGE Analysis

Castillo limited the hits, but the walks hurt him as two of the three allowed came around to score. After a very rough start to the year Castillo has put up good numbers in May, going 3-2 with a 3.48 ERA and 1.25 WHIP to go along with a 37:12 K:BB in 33.2 innings. Prior to Tuesday's start Castillo hadn't allowed more than two runs in his last five starts, and he'll look to get back on track in his next outing against the Rockies at home.

Castillo (4-4) allowed two runs on four hits and two walks while striking out five over six innings in a win over the Pirates on Thursday.

EDGE Analysis

He gave up a two-run homer to David Freese in his final frame but was strong otherwise, inducing 10 swinging strikes on 90 pitches. It's been a tale of two months so far for Castillo; after posting a 7.85 ERA and 1.67 WHIP over his first six starts, Castillo has turned in a 2.83 ERA and 31:9 K:BB in May. A mechanical tweak got Castillo back on track and looking once again like the burgeoning ace we saw last year. Up next: a road matchup in Arizona.

Castillo struck out four batters in five innings in a no decision Saturday against the Cubs, walking five and allowing six hits but just one run.

EDGE Analysis

Castillo didn't have a single clean inning but nevertheless escaped without major damage. He got out a bases-loaded one-out jam in the top of the first inning by getting Kyle Schwarber to ground into a double-play, setting the tone for a shaky outing. In all five innings, he managed to strand a runner in scoring position, but only once did he allow a runner to cross the plate. It certainly wasn't a spectacular performance, but it served to bring the young righty's ERA down to 5.61. He'll next take the hill Thursday against the Pirates.

Castillo (3-4) was charged with three runs (two earned) on four hits over six innings in a win over the Dodgers on Sunday. He struck out eight and did not issue a walk.

EDGE Analysis

He gave up a pair of solo homers but was sharp for most of the afternoon, getting a ton of swinging strikes (20 total) with both the high fastball and the low changeup. As noted by The Athletic, Castillo recently made a change to his mechanics, raising his arm slot. Castillo's release point and spin were down early on and that led to poor results, but he now has a 3.06 ERA and 22:2 K:BB in three May starts. He gets the Cubs at home next weekend.

Castillo (2-4) allowed two runs on three hits and one walk across 5.2 innings while earning the win Tuesday against the Mets. He struck out seven.

EDGE Analysis

Castillo was excellent through the early going, retiring the first 14 batters he faced in order. He took a shutout into the sixth inning, but allowed a solo home run, a single and a walk before he was removed with two outs. Castillo endured a poor start to the season, but he's begun to turn things around of late, allowing four earned runs with a 14:2 K:BB ratio in 11.2 innings over his last two outings. He'll take a still unsightly 7.01 ERA and a 1.67 WHIP into his scheduled start Sunday against the Dodgers.

Castillo (1-3) took the loss Sunday, allowing three runs on seven hits and four walks while striking out three over five innings against the Cardinals.

EDGE Analysis

Castillo allowed a lot of baserunners in this one -- the seven hits and four walks were both his highest totals of the season thus far -- so he was actually somewhat fortunate to limit the damage to just three runs. It's been a frustrating start for the 25-year-old, who had been trending in the right direction his last two times out, but now sees his ERA and WHIP sit at an unsightly 6.51 and 1.45, respectively. He'll look to right the ship next time out Friday against the Twins.

Castillo (1-2) allowed four runs on five hits and three walks and struck out eight through 6.2 innings to earn the win Monday against the Brewers.

EDGE Analysis

Castillo was cruising, with a shutout through six innings, but he and the Reds stumbled in the seventh inning as they were nursing a 9-0 lead. He was otherwise fantastic, as he induced 18 swinging strikes on 107 pitches and induced seven grounders against five fly balls. But unfortunately, the four-run seventh inning -- including two inherited runners allowed by reliever Cody Reed -- will keep Castillo's ERA at a lofty 6.75.