Prospects Jacob Turner and Tyler Skaggs don't know what their MLB future holds after Wednesday's doubleheader between the Miami Marlins and Arizona Diamondbacks.

Both will look to make positive impressions when they square off in the first game of a day/night twinbill that wraps a four-game set.

This series was originally slated to end on Thursday at Arizona's Chase Field, but a scheduling issue instead led to the clubs playing twice on Wednesday. That opens the door for Turner and Skaggs to get a taste of major league action.

It won't be the first time for the Marlins' Turner, the ninth overall pick of the Detroit Tigers in 2009 who was traded to Miami on July 23 in a deal that sent pitcher Anibal Sanchez and infielder Omar Infante to Detroit.

The 21-year-old Turner is 1-2 with an 8.28 earned run average in six career starts at the majors, making three last year and another three this year. His last was July 22 and he won his first game, allowing three runs over 5 1/3 frames versus the Chicago White Sox.

Turner, a righty, was sent to Triple-A New Orleans after the trade and went 2-0 with a 1.98 ERA in five outings. With the playoffs unlikely for the Marlins this year, they can afford to take a look at Turner to see where he fits in for next year.

"I think we should keep him here to see if we can count on him next year, or exactly what stage he is in," Miami manager Ozzie Guillen told his team's website. "I don't think they're against him staying. We're trying to figure out how to use him. To keep this kid here not to pitch is not any good. That's why we're having this discussion, and we're putting everything on the table."

Skaggs will be making his MLB debut after pitching in both Double-A and Triple-A this season.

The 21-year-old was one of the players the Diamondbacks acquired from the Los Angeles Angels of Anaheim in 2010 in the Dan Haren trade and went 4-2 with a 2.91 ERA in nine starts after the recent promotion.

Like Turner, it is unclear what will happen to the lefty after today's start. Arizona is still in the playoff hunt, sitting six games back of first place in the NL West and five out of a wild card spot.

"He's had good years in the minors, he's a big lefty and he's got strikeout stuff," D-backs manager Kirk Gibson said on his team's website. "He's developed and put it all together. He's efficient and he's not afraid to let them put the ball in play, even though he can strike you out."

The second game will feature Diamondbacks rookie Wade Miley against the Marlins' Wade LeBlanc.

Miley, who has already set a club rookie record in wins, snapped a two-start slide with a victory over the Houston Astros on Friday. He worked around eight hits over six innings to allow one run and strike out five without a walk. He moved to 13-8 with a 2.96 ERA on the season.

The 25-year-old southpaw beat the Marlins on April 29, yielding one unearned run over 6 1/3 innings.

LeBlanc has served as a reliever and a starter this year, going 2-2 with a 2.50 ERA in 15 total appearances. He makes his fifth start of the season on Wednesday and won his first game since July 4 on Friday at the Colorado Rockies even though he gave up five runs over five frames of work.

LeBlanc, a 28-year-old lefty, is 3-2 with a 5.23 ERA in eight starts versus Arizona.

The Diamondbacks came into this series having won four in a row, but were routed 12-3 in Monday's opener before suffering a 6-5 setback in 10 innings on Tuesday.

Arizona jumped out to a 5-0 lead in the first inning, but Miami chipped away and tied the game with a three-run sixth. The Marlins then plated the winning run in the top of the 10th on Giancarlo Stanton's single.

One night after pounding out 20 hits, the Marlins registered 15 on Tuesday as Stanton finished with three and a run scored. Donovan Solano went 3-for-3 with two RBI as the Marlins won for the fifth time in seven games.

"Earlier in the year we would have just gave up and lost 10-0," Stanton said. "We fought and everyone contributed tonight."

Justin Upton plated two of Arizona's five runs in the first with a single, but left following the inning with a leg injury.

"It was a disappointing game tonight, disappointing loss," Arizona manager Kirk Gibson said. "We should have won that game. We had an opportunity and we didn't close it out."

Miami also saw Emilio Bonifacio exit in the third frame with an injured knee.

The Diamondbacks have won six of their past nine versus the Marlins, including three of four in Miami from April 27-30.