It was quite a response to a tough series against Cleveland.
Suarez hit a two-run homer during Cincinnati's seven-run third inning, and the Reds swept the San Francisco Giants with an 11-4 win on Sunday.
The Reds also swept the Giants in Cincy last season. Nine different Reds scored at least one run, helping Cincinnati bounce back after it was swept by Cleveland.
"Sometimes it is when you play a club," interim manager Jim Riggleman said. "We had a hot Cleveland team, then we get a Giants team that's been struggling with the bats. We got them at the right time."
San Francisco had a chance to sweep Los Angeles before the Dodgers' 12-inning victory on Wednesday night. The Giants then managed just six runs in the sweep by the Reds, extending their slide to four games.
"It's frustrating," San Francisco manager Bruce Bochy said. "We didn't hit much, The offense didn't do anything here. We were hoping for more."
Giants left-hander Andrew Suarez (4-9) was tagged for seven runs, five earned, and seven hits in a season-low 2 2/3 innings in the finale.
"I got ahead," Suarez said. "I just couldn't put them away. I didn't have that putaway pitch today. I thought I had good stuff. The location wasn't there."
Giants infielder Chase d'Arnaud worked a scoreless eighth in his first career pitching appearance.
Suarez's career-best 27th homer made it 6-1 in the third. Scooter Gennett hit a two-run triple before Suarez's drive to center.
Curt Casali also had two hits and drove in two runs in Cincinnati's big inning.
"It was an awesome inning," Casali said. "I'm sure I've had two hits in an inning at some point in my career, but not in the big leagues. Any time you put up a crooked number against a club like that, it's important."
Reds right-hander Luis Castillo (7-10) struck out nine in 6 2/3 innings. He was charged with three runs, one earned, and six hits.
"Everything was working for me today," Castillo said. "I was commanding my changeup. My slider was good and I was throwing strikes. I think, like last year, I'm able to throw my pitches in any situation."
Castillo retired 13 straight batters before Stephen Duggar's two-out single in the seventh.
"You look at his velocity," Bochy said, "I don't know of anybody in the National League who throws harder on average, and his changeup was biting. He was on top of his game."
Peraza finished with three hits as Cincinnati closed out a 5-4 homestand. Phillip Ervin had two hits and scored a run.
Brandon Belt became the first first baseman to lead off for the Giants since David Bell on July 6, 2002, at Arizona. Belt went 0 for 4 with two strikeouts.
The Reds had three triples in one game for the first time since Hamilton, Peraza and Devin Mesoraco tripled against the Dodgers on June 17, 2017. Hamilton is the first Red with two triples in one game since Jay Bruce on May 2, 2015, at Atlanta.
Reds: OF Scott Schebler (strained AC joint in his right shoulder) is set for a rehab assignment with Double-A Pensacola. The Reds hope he will be ready to join them in Chicago during their weekend series with the Cubs.
Giants: LHP Derek Holland (6-8) makes just his second career start against the Mets in Monday's series opener in New York.
Reds: Homer Bailey (1-10) is scheduled to start Monday in Milwaukee. The Reds are 1-15 in Bailey's starts this season.
Which players should teams target in trades this winter?
For teams looking to make a high-impact addition, a winter swap could land some MVP-caliber performers.
Predicting 2019 for this year's MLB awards finalists
After the hardware is handed out this week, here's what comes next for baseball's best players.
Taking a look at the AL Rookie of the Year finalists
Gleyber Torres and Miguel Andujar put up strong numbers in 2018, but despite being limited because of an injury, Shohei Ohtani managed to impress while on the mound and at the plate.
MLB awards roundtable: Who will take home the hardware and why
Ohtani or Andujar? Verlander or Snell? DeGrom with just 10 wins?? We break down all the angles in advance of baseball's major award announcments.
MLB All-Stars pick up first win over Japan
Yadier Molina and J.T. Realmuto both homered Sunday to lead the MLB All-Stars to a 7-3 win over Japan for their first win of the six-game exhibition series.
NL Central offseason preview: Can the Brewers do it again?
Milwaukee seems due for some regression, the Cubs don't figure to throw money at their problems and the Cardinals might be looking to add some star power.