Second base: Dee Gordon, Marlins
Because of his speed, Gordon can be a game-changer. He's coming off a breakout season in which he led the NL in triples (12) and stolen bases (64) and made his first All-Star team. Despite that, the Dodgers traded Gordon to the Marlins during the offseason. He doesn't turn 27 until the end of April, so there's no reason to think he won't have another big year.
Shortstop: Ian Desmond, Nationals
Atlanta's Andrelton Simmons has the Gold Glove, but Desmond gets the nod for his overall contributions. Shortstops who put up substantial offensive numbers are rare these days, and Desmond has been the NL Silver Slugger winner at his position for each of the past three seasons. He is durable and provides value on defense as well, and since he can be a free agent at the end of the season, it wouldn't be surprising to see him put up big numbers in his walk year.
Third base: Anthony Rendon, Nationals
Entering just his second full season in the big leagues, the former first-round pick is already good and should still have some upside, assuming the sprained left knee that sidelined him in Spring Training doesn't become a lingering issue. Rendon led the league with 111 runs scored in 2014, and his OPS jumped from .725 to .824 as he won the Silver Slugger and finished fifth in NL MVP Award voting.
Catcher: Travis d'Arnaud, Mets
This could be the year d'Arnaud firmly establishes himself. After returning from Triple-A Las Vegas last season, he batted .272 with 10 homers and 32 RBIs and had an .805 OPS in his past 69 games. d'Arnaud also batted .313 with 10 extra-base hits and a .903 OPS in September. Overall, his 22 doubles and 38 extra-base hits ranked second among all NL rookies.
Left field: Christian Yelich, Marlins
The Marlins showed how much upside they think the 23-year-old Yelich has by signing him to a seven-year, $49.57 million contract this spring. In 2014, his first full season in the big leagues, he batted .284 with a .362 on-base percentage, scored 94 runs and won a Gold Glove. General manager Dan Jennings has said Yelich reminds him of Don Mattingly.
Center field: Marcell Ozuna, Marlins
While far from a finished product, Ozuna has the raw skills to become a force. Last year, at age 23 and in his first full season in the big leagues, he hit 23 homers with 85 RBIs and a .772 OPS. If Ozuna continues to improve his plate discipline, those numbers could improve dramatically. And while he doesn't equal Mets Gold Glover Juan Lagares in the field, he's decent enough on defense.
Right field: Giancarlo Stanton, Marlins
Yes, it remains to be seen how Stanton bounces back from being hit in the face with a pitch last season. And, yes, it remains to be seen how he'll react to that 13-year, $325 million contract he got last winter. But Stanton is one of the most feared power hitters in the game today and a perennial NL MVP Award candidate who seems to be just coming into his own.
Starting pitcher: Max Scherzer, Nationals
According to the Elias Sports Bureau, last season Scherzer became just the second pitcher with at least 15 wins, no more than five losses and 200 or more innings in back-to-back seasons. He joins Sandy Koufax (1964-65). And Scherzer did that facing mostly American League lineups while with the Tigers. Signing with the Nats means that his already-impressive numbers could be even better now that he won't be facing designated hitters nearly as often.
Closer: Craig Kimbrel, Braves
No closer in baseball has been more consistently dominant since 2011. Kimbrel has made the All-Star team four straight seasons while leading the NL in saves each year. In the past three seasons, his WHIP has been under 1.00, and his career ERA sits at a mere 1.43. At only 26 years old, there's no reason to believe Kimbrel can't continue to pitch at a high level for years to come.