Gage Jump: Everything you need to know

Jump (0-1) allowed four runs on nine hits and one walk while striking out five batters over five innings in a loss to Seattle on Tuesday. Jump was added to the 40-man and 26-man rosters ahead of Tuesday's contest and made his first appearance as a major-leaguer. The left-hander retired the first three batters he faced but then had a rough second inning, giving up three runs on four hits and a walk. Jump gave up another run on five hits and a hit-by-pitch over the following two frames but did manage to finish the start with a 1-2-3 fifth inning. He displayed decent strikeout stuff overall, notching 13 whiffs and five punchouts. Jump could be lined up for additional starts while Aaron Civale (shoulder) remains on the injured list.

The Athletics selected Jump's contract from Triple-A Las Vegas ahead of his scheduled start Tuesday versus the Mariners in Sacramento. Luis Severino had initially been lined up to take the hill Tuesday, but he'll be pushed back to Friday while the Athletics open up a start for Jump, who will be replacing the injured Aaron Civale (shoulder) in the rotation. A 23-year-old lefty, Jump earned the chance to make his MLB debut after submitting a 4.74 ERA, 1.47 WHIP and 56:20 K:BB across 38 innings over his nine starts in the hitter-friendly Pacific Coast League. Jump will call another hitter-friendly environment in Sutter Health Park his home venue as he moves up to the big leagues, so fantasy managers will have to weigh whether the strikeout upside he brings to the table is worth the risk he carries of inflicting damage in the ratio categories.

Jump will be called up from Triple-A Las Vegas to make his major-league debut Tuesday with a start against the Mariners, Martin Gallegos of MLB.com reports. Reports had surfaced earlier Tuesday indicating that Jump was on his way to the big leagues, and now there's a specific date attached to his debut. Tuesday's previously scheduled starter, Luis Severino, will be pushed back as a result of Jump's addition to the rotation. Jump has collected a 4.50 ERA and 56:20 K:BB over 38 innings with Las Vegas this season and has spun 11 shutout frames with a 15:1 K:BB in his last two starts.