SAN FRANCISCO (Interstat) — Tyler Mahle pitched six innings of three-hit shutout ball, Grant McCray hit a two-run home run and the San Francisco Giants defeated the Milwaukee Brewers 3-0 on Monday night at Oracle Park.

Mahle, who entered with a 2-9 record, allowed three hits and struck out three while walking one. He threw 62 of 92 pitches for strikes. The right-hander induced two double-play grounders from the Brewers’ lineup, which managed only three hits total.

McCray’s homer in the fourth inning broke open a 1-0 game and provided all the offense the Giants would need. The rookie right fielder finished 1-for-3 with two RBIs. Jesus Rodriguez also contributed a double and scored on Luis Arraez’s RBI single in the third inning.

Erik Miller pitched a scoreless ninth inning for his third save of the season. He struck out two batters.

Brandon Sproat took the loss for Milwaukee, falling to 3-6. The right-hander allowed three runs, two earned, on six hits over six innings. He struck out four and walked two.

Milwaukee, which came into the game with a major-league-best 66-39 record, was shut out for the fourth time this season. The Brewers had averaged 6.2 runs in their previous 15 games. San Francisco improved to 45-61.

The game lasted 2 hours, 20 minutes in front of a crowd of 35,107.

San Francisco struck first in the third inning. Rodriguez led off with a double to right field. Arraez followed with a single to right, scoring Rodriguez for a 1-0 lead. The Giants added two more in the fourth after Christian Koss walked and Willy Adames singled. McCray then drove a 1-1 fastball from Sproat over the left-center field wall for his first home run of the season, making it 3-0.

Milwaukee had its best scoring opportunity in the second inning. Jake Bauers singled with one out and Andrew Vaughn walked, putting runners at first and second. But Garrett Mitchell grounded into a double play, Mahle to Willy Adames to Rafael Devers, ending the inning.

The Brewers also put runners on base in the fifth when Vaughn singled with one out, but Mitchell again grounded into a double play, this time shortstop Adames to first baseman Devers.

Milwaukee’s final threat came in the seventh when Jackson Chourio singled with no outs. But Brice Turang struck out, William Contreras flied out and Luis Lara grounded out to end the inning.

San Francisco’s bullpen held the Brewers hitless over the final three innings. Sam Hentges pitched a scoreless seventh, Dylan Smith worked a perfect eighth and Miller closed it out in the ninth.

San Francisco’s defense also turned three double plays, including a line-drive double play in the second when Brice Turang caught a liner and doubled off Christian Koss at second base.

Milwaukee had won four of its previous five games entering Monday. The Brewers had swept a three-game series against the Colorado Rockies over the weekend, outscoring them 21-12. San Francisco had lost three of its previous four games, including a 4-3 loss to the Los Angeles Angels on Sunday.

The two teams continue their three-game series Tuesday night at Oracle Park. Milwaukee then travels to Los Angeles for three games against the Angels starting Friday. San Francisco heads to San Diego for a four-game series beginning Thursday.

Interstat’s game simulator had projected a final score of Milwaukee 6, San Francisco 5. Interstat’s ELO system gave Milwaukee a 63.10 percent probability to win. The Brewers were installed as a pregame favorite with a spread of minus-1.5. The total score of 3 went under the over/under line of 8.5.