It was, to use Hunter Renfroe’s own word, “humbling” to be sent back to the minor leagues after almost five months as a big league regular with San Diego. “You either grow from it or you fail from it,” the ex-Mississippi State standout told The Associated Press. The 25-year-old rookie returned to the Padres with some vigor on Monday, hitting a three-run homer in his first at-bat that propelled the team to a 4-2 win over Arizona. Renfroe went down to Triple-A El Paso on Aug. 18 and hit .509 with four home runs in 14 games, then helped the club reach Game 5 of the Pacific Coast League Championship Series. Monday’s homer was Renfroe’s 21st for the Padres. He also struck out for the 126th time; he has just 26 walks. How Renfroe handles the last two weeks of the season will be closely scrutinized. P.S. Brent Suter threw five shutout innings and fellow former Biloxi Shuckers star Brett Phillips threw out a runner from center field to end the game as Milwaukee kept its playoff drive alive with a 3-0 win at Pittsburgh.