Arroyo has tried flying out before the team and he said he felt disconnected.
"It's hard for me to be away from the team, the game, for even a day," he said.
Besides, manager Dusty Baker said, Arroyo stays up late most nights, so he wouldn't necessarily get more rest leaving a city early.
Whatever his formula, Arroyo is coming off his best effort of the season -- an eight-inning shutout of the Pirates.
He has faced the Brewers once this season. On April 14, he got the victory at Milwaukee, even though the Brewers touched him for six runs in five innings.
Arroyo comes in 8-5 career-wise against Milwaukee, though he's won four of his last six chances.
CIN: RHP Bronson Arroyo (4-1, 4.91 ERA)
Arroyo stymied the Pirates for eight scoreless innings and a 4-0 Reds win on Friday night while giving up four hits, three walks and striking out four. He relied heavily on his fastball and established it early, but used his breaking stuff as the out pitch. A pair of double plays on the ground also helped him stay out of serious trouble. Arroyo has worked exclusively with backup catcher Ryan Hanigan to this point and it's been especially to the right-hander's liking.
MIL: LHP Manny Parra (0-4, 5.33 ERA)
Parra remained winless after his fifth start on Friday against the D-backs, but at least he didn't suffer the loss. The lefty, who had lost each of his first four starts, shut out Arizona hitters on just 63 pitches through the first five innings before running into trouble in a 30-pitch sixth. He was burned by a pair of two-out walks, including a pass to Conor Jackson that forced in the first run of the game. It was intriguing that Parra walked Jackson on a full-count changeup, a pitch that manager Ken Macha has urged -- strongly -- that Parra use more often.
Ramon Hernandez, working on 32-year-old legs, caught all 14 innings on Monday night, then was right back in the lineup Tuesday night. "I asked him if he was OK, and he said yes," Baker said. The manager plans to give backup Ryan Hanigan a start on Wednesday, so he wasn't too thrilled about giving Hernandez two nights off in a row. Later in the season, it might be different, Baker said. ... Some believe Joey Votto has the speed to reach double figures in steals, unusual for a first baseman. Votto easily got his second steal of the season Tuesday night, eventually scoring. ... The Reds wound up with two steals Tuesday night, none by Willy Taveras, the team's steal leader with five.
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Official game notes
Friday: Reds (Micah Owings, 1-3, 4.84) vs. Brewers (Braden Looper, 2-1, 3.10), 7:10 p.m. ET
Saturday: Reds (Johnny Cueto, 2-1, 1.65) vs. Cardinals (Joel Pineiro, 4-1, 3.24), 7:10 p.m. ET
Sunday: Reds (Aaron Harang, 2-3, 3.00) vs. Cardinals (TBD), 7:10 p.m. ET