CHICAGO (Interstat) — Gage Jump pitched into the seventh inning and Hogan Harris earned his fifth save as the Athletics beat the Chicago Cubs 2-1 on Tuesday at Wrigley Field before 36,065 fans in a game that lasted 2 hours, 19 minutes.

Jump (1-1) allowed one run on four hits over 6 1/3 innings, striking out six. Jameson Taillon (2-5) took the loss, giving up two runs on six hits in 6 1/3 innings with six strikeouts.

The Cubs scored in the first when Alex Bregman grounded out, bringing home Nico Hoerner. The Athletics tied it in the third and took the lead in the fourth on Zack Gelof’s RBI single that scored Brent Rooker.

Oakland’s bullpen held Chicago scoreless over the final 2 2/3 innings. Harris worked a perfect ninth for his fifth save.

The Athletics had six hits, the Cubs four. Michael Busch went 1-for-3 with a single for Chicago. improved to 29-31, while the Cubs fell to 32-29. The teams meet again Wednesday in the second game of the series.