Rondon (3-2) served as the opener in Tuesday's loss to the Angels, retiring only two batters and giving up six runs on five hits and a walk while striking out one. After 396 games as a reliever, Rondon was given the opportunity to open a game for the first time in his career. Needless to say, the experiment did not go well, as the 31-year-old gave up five runs and allowed the first six Angels hitters to reach base before recording his first out. The blowup increased Rondon's ERA from 3.34 to 4.79 over 38 appearances.
Rondon will serve as the opener for Tuesday's game against the Angels, manager AJ Hinch told MLB Network Radio on SiriusXM. The outing will technically be Rondon's first career start as a major leaguer, but it would be a surprise to see him pitch for much longer than an inning. The opener role isn't a very interesting one for fantasy purposes, as it guarantees that Rondon will face the toughest part of the Angels' order and removes even the slim possibility at earning a win. Rogelio Armenteros will pitch the bulk of the innings behind Rondon.
Rondon (3-1) worked around a leadoff double to pitch a scoreless seventh inning and earn the victory in Friday's 3-2 win over Oakland. Rondon was the pitcher of record when Derek Fisher hit a go-ahead home run in the eighth inning. As he's done several times this season, Rondon was used in the seventh inning before Ryan Pressly and Roberto Osuna closed out a win. Rondon has a 2.70 ERA and 1.35 WHIP with eight holds in 2019.
Rondon allowed a hit in a scoreless seventh inning of Friday's 3-2 win over the Athletics. Rondon had two clean appearances before allowing his first baserunner of the season. After serving as a closer and setup man in 2018, Rondon's role has shifted back a spot to the seventh inning, and he'll rarely be used beyond one inning of work.
Rondon struck out two batters over a hitless and scoreless inning Saturday against the Marlins. There hasn't been much focus on Rondon or the Astros bullpen, which, aside from the final spot, was settled entering spring training. Rondon is set to begin the season as a high-leverage option, although he dropped a notch below Ryan Pressly.