Acquired from the Tigers last month, Turner tossed six innings against the D-backs last Wednesday, surrendering just three runs on four hits in his first outing with the Marlins. However, he took the loss in a tight 3-2 Arizona win.
"I love him," Guillen said. "The one thing I like is he throws strikes. ... He just goes out there and it seemed like he was there. The body language was good."
Because the team has been so pleased with the right-hander's progress, it decided to keep Turner in the rotation and see how he does the remainder of the season. Turner will take the hill on Wednesday against the Nationals in Miami, ready to get his first win with his new team.
"That was probably the biggest thing for me, making those in-game adjustments," Turner said about his last start. "Marlins Park is beautiful and the dimensions are pretty big, so as a pitcher, you can't complain about that."
Meanwhile, Ross Detwiler will be on the hill for the Nats, ready to help them end their five-game losing streak.
Taking the loss in his previous outing against the Braves last Wednesday, the left-hander went 5 1/3 innings, allowing two runs on seven hits for his sixth loss of the season.
While Detwiler retired nine straight at one point, he had trouble throwing his breaking pitches and relied almost entirely on his fastball.
"It's easy to say you don't throw enough breaking stuff when they are hitting fastballs," Detwiler said after the start. "I didn't have good command of the breaking stuff. Overall, I didn't give our team an opportunity to win. That's what it boils down to."
Nationals: Desmond, Morse return
Ian Desmond and Michael Morse were in the Nationals' lineup for Tuesday's series opener against the Marlins, bringing Washington's lineup back to full strength.
Desmond (right hamstring) and Morse (right hand) both got the green light from the club's training staff and felt well enough to play.
"We've been down a man or two, mostly a man, most of the year," manager Davey Johnson said. "But down two, that's affecting what you can do."
Desmond finished the game 0-for-4 with three strikeouts, while Morse went 0-for-3.
Marlins: Team not in rush to make callups
Even with rosters expanding on Saturday, manager Ozzie Guillen said Tuesday that he expects only two or three players to be called up next month.
"I don't expect that many guys," Guillen said. "I think we have enough. Obviously they're going to bring people, I don't know the names, but they're going to bring two or three guys."
Guillen doesn't expect more because many of the players are already with the team either due to injuries or deals the Marlins made before the non-waiver Trade Deadline.
Ryan Zimmerman's 16 career home runs against the Marlins are tied with the Braves for the most he's hit against any club.
Nationals pinch-hitters are batting .320 (47-for-147) with 13 doubles, a triple, three home runs and 21 RBIs this season.
Miami is 7-7 against Washington this season, but is 6-2 at home against the National League East rival.