Giants manager Bruce Bochy also said closer Santiago Casilla will likely be away from the team all weekend. He was placed on the paternity-leave list as he awaits the birth of a baby girl. Steven Okert, a lefty reliever, was called up to join the team in Tampa Bay. Okert has a 6.35 ERA in 5 2/3 innings this season with the Giants. Bochy will decide closers based on matchups until Casilla gets back.
"It gives us a left-hander, and he's been throwing the ball well," Bochy said of Okert. "He's been locating his pitches well. He's been getting lefties and righties out."
It will be Suarez's third Major League start after getting called up by the Giants in May. He's got a 3.33 ERA in 27 innings this season. He was signed by the Rays as an amateur free agent in 2008 and played in their organization through 2014. The righty had a rash of injuries in the Minors, never getting above Double-A Montgomery. In 2015, the Rays declined to re-sign him.
Suarez said the Rays were good in handling his injuries and treated him well. He harbors nothing against the organization he's spent most of his professional career with.
"It's just another team," Suarez said. "I don't have hard feelings or nothing for them. The time I was there with them, they were good to me."
• Bochy said Buster Posey, who started at catcher Friday, likely will be the DH on Saturday and Sunday so Bochy can get him off his feet for two days.
"I'm leaning that way," Bochy said. "I talked with Buster, that could change. It's a chance to keep him fresh."
Bochy had discussed DHing Brandon Belt, but Belt insisted he was fine after taking a pitch off his foot Tuesday, and Bochy wanted his defense in the field.
Sam Blum is a reporter for MLB.com and covered the Giants on Friday.