"I was throwing up all last night," Arroyo said.
Johnny Cueto, who also had the flu, followed and allowed one earned run and four hits with two strikeouts.
"His stuff is electric and he wasn't even feeling good," Baker said. "He'll be even better yet."
Reds veteran relievers took their lumps in Sunday's 8-4 loss to the Blue Jays. Mike Stanton gave up a two-run home run to Buck Coats in the fifth. David Weathers allowed two runs in his inning of work and Kent Mercker surrendered a two-run homer to Joe Inglett in the eighth.
While Weathers' roster spot is secure, the other two situations are more tenuous. Stanton is slated to make $3 million this season, but struggled last season and is battling with several left-handers for a bullpen spot. One of them is Mercker, who is a non-roster player trying to come back from elbow surgery after taking last year off.
"It usually takes older guys longer to get ready and get it together than it does the young guys," manager Dusty Baker said. "It happens every spring because they depend on location and sharpness."
Good day, eh?
First base prospect Joey Votto, a native of Ontario, Canada, was popular with the Toronto media before Sunday's game. There was a gaggle of Canadian reporters gathered around Votto in the visitor's clubhouse for interviews.
"Joey, are you from Dunedin?" pitcher and jokester Kent Mercker called out. "Are you talking about your high school stats?"
If Votto makes the Reds, he'll get much more attention when the Reds visit Toronto to play the Blue Jays, June 24-26, in Interleague Play.
News and features:
Spring Training info:
Jerry Hairston on being with Reds 400K
Dusty Baker on the first game 400K
Belisle on his spring debut 400K
Reds' Green on his '08 hopes 400K
Mercker on his spring debut 400K
Fogg on his spring debut 400K
"I think I'll start negotiating my tickets to him now," Baker said.
No, I'm Drew Anderson:
There was some slight confusion at Sunday's game when the Reds brought two players named Drew Anderson to town. The first Anderson is an outfielder on the 40-man roster that replaced center fielder Jay Bruce in the second inning.
The other was an infielder called over from Minor League camp. He was a 2004 13th-round Draft pick by Cincinnati and played at Double-A Chattanooga last season. He appeared as a pinch-hitter and grounded out to first base in the eighth.
Before the game, both Andersons were signing autographs in the same vicinity.
"Will the real Drew Anderson please stand up?" general manager Wayne Krivsky joked. "It'll cause P.A. havoc if both guys are on the team this year."
The Reds signed injured pitcher Bobby Livingston to a one-year contract on Sunday.
Jeremy Affeldt (0-1, 4.50) will make his second start when the Reds face the Twins at 1:05 p.m. ET Monday in Fort Myers, Fla. Another lefty, Glen Perkins, is scheduled to pitch for Minnesota.