KANSAS CITY, Mo. (Interstat) — Salvador Perez hit a two-run home run in the fourth inning and Josh Rojas scored the winning run on a ninth-inning bunt single by Nick Loftin as the Kansas City Royals defeated the San Francisco Giants 4-3 on Monday night at Kauffman Stadium.

The Royals snapped a three-game losing streak and improved to 41-60. The Giants, who had won four of their previous five, fell to 42-58.

Michael Wacha pitched six strong innings for Kansas City, allowing one run on three hits with five strikeouts. He did not factor in the decision after leaving with a 3-1 lead. Alex Lange earned the win, his first of the season against five losses, by pitching a scoreless ninth inning.

Caleb Kilian took the loss for San Francisco, his record falling to 2-6. He entered the game in the ninth inning and allowed the walk-off run.

The game was a pitchers’ duel until the fourth inning. Giants starter Trevor McDonald worked three scoreless innings, allowing only one hit. He struck out three and walked one. In the top of the fourth, Heliot Ramos broke the deadlock by hitting his ninth home run of the season to right-center field off Wacha, giving San Francisco a 1-0 lead.

The Royals responded immediately in the bottom half. Vinnie Pasquantino was hit by a pitch to lead off the inning. Perez followed by crushing a 1-2 pitch to center field for his 13th homer of the year, scoring Pasquantino and putting Kansas City ahead 2-1. Michael Massey doubled later in the inning and scored on a line-drive single by Isaac Collins, stretching the lead to 3-1.

McDonald ended the inning having allowed three runs on four hits over four innings. He was relieved by JT Brubaker, who provided 2 1/3 innings of scoreless relief, allowing three hits while striking out two.

The Giants staged a dramatic rally in the top of the ninth. Trailing 3-1, they faced Royals reliever Alex Lange. Rafael Devers struck out swinging to lead off the inning, and Heliot Ramos also struck out swinging. With two outs, Jung Hoo Lee kept the inning alive with a line-drive single to center field. Willy Adames then stepped to the plate and launched his 18th home run of the season to right-center field, tying the game 3-3.

Adames finished the game 1-for-4 with two RBIs and the home run.

The tie was short-lived. In the bottom of the ninth, Josh Rojas led off with a single to left field off Kilian. Tyler Tolbert then executed a sacrifice bunt, advancing Rojas to second base. Carter Jensen lined out to center field, but Rojas moved to third on the play. Loftin then laid down a soft bunt toward first base. The ball was fielded by first baseman Bryce Eldridge, but Loftin beat the throw, and Rojas scored the winning run.

Kansas City outhit San Francisco 9-6. Isaac Collins had two hits and an RBI for the Royals. Perez drove in two runs. For the Giants, Ramos homered, and Lee had two hits, including a single in the ninth.

The Royals bullpen allowed the two-run homer to Adames but otherwise held firm. Steven Cruz pitched a scoreless seventh inning, allowing no hits. Daniel Lynch IV worked a scoreless eighth, allowing one hit and striking out one. Lange allowed two runs on two hits in the ninth but got the win.

San Francisco’s bullpen also performed well. Brubaker’s scoreless outing was followed by Dylan Smith, who retired two batters, striking out one, and Jason Foley pitched a scoreless eighth inning.

The game lasted two hours, 30 minutes in front of an announced crowd of 16,411.

Wacha’s start was a sharp rebound from his previous outing July 9 against the New York Mets, in which he lasted 4 2/3 innings, allowing six runs on six hits.

Interstat’s game simulator had projected a final score of San Francisco 6, Kansas City 5. Interstat’s ELO system gave Kansas City a 50.30 percent probability to win. San Francisco had been installed as a pregame favorite with a spread of minus-1.5. The total of seven runs went over the over-under line of 10.5.