Jupiter, Fla. - Allen Craig bolstered his bid for more playing time in Boston's crowded outfield, hitting a three-run double in helping the Red Sox build a lead the Miami Marlins would overcome with an eight-run eighth inning for a 9-4 victory Tuesday.

Playing in the spring training park he once called home with the St. Louis Cardinals, Craig's double off Tom Koehler capped a four-run third inning for the Red Sox.

Locked in a six-player battle for one of the five roster spots the Red Sox intend to use for outfielders, Craig is hitting .278 with seven RBI in Grapefruit League play.

"Obviously everybody wants results and hits and RBIs and stuff, but I feel like my process is pretty good right now," Craig said.

Craig came to Boston via a 2014 trade with St. Louis, which shares the Roger Dean Stadium complex with Miami.

Jordany Valdespin hit a two-run triple and Jeff Baker doubled in two in the Marlins' big inning. Miami managed only one hit until the eighth.

Red Sox manager John Farrell said he has a good idea which outfielders will make the opening day roster but he's not willing to make a proclamation, yet.

The durability of Shane Victorino, who underwent offseason back surgery, is still a concern. Farrell said Victorino is not 100 percent healthy, yet, but when Victorino is healthy he's the starting right fielder. Farrell also hopes to see more of newly signed Rusney Castillo in right field before announcing the decision.

Tanaka on track for opener

• Masahiro Tanaka is lined up to start the New York Yankees' opener against Toronto on April 6, which would end CC Sabathia's streak of six straight opening-day starts for New York.

"Absolutely, it will be a great honor to be able to pitch opening day," Tanaka said through a translator. "Being able to pitch on that very first day of the season, I think it says a lot about what the organization is expecting out of a pitcher."

Yankees manager Joe Girardi says Sabathia's next exhibition start is Saturday, which lines up the 34-year old left-hander to face the Blue Jays on April 8.

Sabathia is coming back from season-ending knee surgery in July. He has 11 opening-days starts overall. Tanaka is starting his second season with New York.