DETROIT -- It’s left field or bust for Christin Stewart.

With Miguel Cabrera under contract for the next four seasons, it’s likely that designated hitter will be occupied for the foreseeable future.

That means there’s no Plan B for Stewart. He needs to hit like the Tigers believe he can. He needs to hit well enough to allow the team to overlook any of his defensive inadequacies in the outfield. And, oh yeah, he needs to do it right now.

Stewart is 26 years old and has nearly 500 big-league plate appearances under his belt. The 2020 season needs to be his breakout year.

If that happens, the Tigers will rejoice, because it gives them one less hole to fill as they begin “building back up” to emerge from their rebuilding process.

The Tigers are not overflowing with other internal options at the moment.

There will be some overlap between this list and the center fielders, and most of the higher-level prospects will be mentioned tomorrow when we address that position. But even at the big-league level there could be some ambiguity. Victor Reyes, for example, might ultimately make more sense as a center fielder, not only because of his lack of power makes him a tough sell as an everyday corner outfielder, but also because he might have the defensive chops to play a more demanding role.

As it stands, Reyes would be an ideal fourth outfielder. But unless the Tigers sign another free agent in the next two weeks, he would enter the season as an everyday or almost everyday right fielder.

Travis Demeritte could make the club as a fourth outfielder to platoon with the left-handed hitting Stewart. Someone like Brandon Dixon could also be an option in a utility role.

There are a handful of Triple-A guys listed below who could get a shot at some point in 2020, most notably Windsor, Ontario, native Jacob Robson.

A fifth-round pick out of East Carolina last summer, Bryant Packard quickly made an impact and advanced all the way to Lakeland in his debut season. Australian Ulrich Bojarski, just 21, could join him there in 2020.

On the 40-man roster: Christin Stewart, Victor Reyes, Travis Demeritte, Troy Stokes Jr.

Non-roster invitees to spring training: Jacob Robson, Danny Woodrow, Jorge Bonifacio, Brandon Dixon.

Possible assignments:

Detroit: Christin Stewart, Victor Reyes, Travis Demeritte.

Triple-A Toledo: Jacob Robson, Danny Woodrow, Jorge Bonifacio, Troy Stokes Jr., Brandon Dixon (utility).

Double-A Erie: Dylan Rosa, Cam Gibson, Luke Burch, Chad Sedio (utility man),

Class A (advanced) Lakeland: Bryant Packard, Ulrich Bojarski, Reece Hampton, Dayton Dugas.

Class A West Michigan: Avery Tuck, Kona Quiggle.

Detroit Tigers right fielder J.D. Martinez (28) looks on in the first inning of their MLB game against the Toronto Blue Jays at Comerica Park in Detroit, Friday, July 14, 2017. (Mike Mulholland | MLive.com) Mike Mulholland | MLive.comMike Mulholland | MLive.com

Most starts at left and right field for Tigers through the years

2012: Andy Dirks, Brennan Boesch

2013: Andy Dirks, Torii Hunter

2014: J.D. Martinez, Torii Hunter

2015: Yoenis Cespedes, J.D. Martinez

2016: Justin Upton, J.D. Martinez

2017: Justin Upton, J.D. Martinez

2018: JaCoby Jones, Nick Castellanos

2019: Christin Stewart, Nick Castellanos

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2020: Christin Stewart, Victor Reyes?

Detroit Tigers' Jeimer Candelario hits a two-run home run against the Chicago White Sox in the first inning of a baseball game, Sunday, Sept. 22, 2019, in Detroit. (AP Photo/Jose Juarez)AP

TIGERS IN 2020

This is the sixth in a series of profiles on the Detroit Tigers’ organizational depth heading into the 2020 season.

Earlier: Catching a focus after last year’s stumbles

Could future first baseman be picked this summer?

Better luck with free-agent second baseman this time?

Niko Goodrum has earned shot at shortstop

Time running short for 2 young third basemen

Today: Corner outfielders

Tuesday: Center fielders

Wednesday: Starting pitchers

Thursday: Relief pitchers

Friday: Pre-spring roster projection