The 2020 season brought plenty of breakout new stars, but it's hard to know what to make of a player from a 60-game sample. Who's for real and who's not?

Now that we're back to the normal 162 games in 2021, we can see what's going on with those players when they have to do it over a full season. These are the ones that are showing their short-season success wasn't a fluke.

Here are 10 players -- five position players, five pitchers -- who are backing up their 2020 breakouts in 2021. (Stats are entering play Sunday.)

Jesse Winker, LF, Reds
2020 stats: 54 G, .255/.388/.544, .932 OPS, 12 HR, 23 RBIs
2021 stats: 43 G, .349/.406/.640, 1.046 OPS, 13 HR, 29 RBIs

Winker was a breakout slugger last season, when he was the Reds' best hitter, and he's been a lot more than that in 2021. Not only is the 27-year-old batting almost 100 points higher than he did in '20, he's outslugging what he did last year, too, already exceeding his home run total from 2020. Teammate Nick Castellanos and Winker rank 1-2 in the NL in batting average, slugging percentage and OPS.

Jared Walsh, 1B, Angels
2020 stats: 32 G, .293/.324/.646, .970 OPS, 9 HR, 26 RBIs
2021 stats: 49 G, .307/.369/.559, .927 OPS, 11 HR, 37 RBIs

The Angels parted ways with Albert Pujols because of how good their other options were at DH and first base: Shohei Ohtani and Walsh. Walsh is over 50% better than a league-average hitter for a second season in a row, going by his adjusted OPS+ (152 in both 2020 and '21, where 100 is average). He's become one of the better hitters in the AL. When he's not slugging the ball out to the pull side, he's using the left-center-field gap. The 27-year-old lefty could end up with 30-plus homers if he keeps up his pace.

Teoscar Hernández, RF, Blue Jays
2020 stats: 50 G, .289/.340/.579, .919 OPS, 16 HR, 34 RBIs
2021 stats: 34 G, .319/.370/.504, .874 OPS, 7 HR, 25 RBIs

Hernández tapped into his power potential in 2020, belting 16 homers and winning an AL Silver Slugger Award in the outfield. Since returning from a bout with COVID-19 at the end of April, he's been red-hot. The 28-year-old Hernández is batting .322 with a .921 OPS in 31 games since rejoining a powerful Toronto lineup alongside Vladimir Guerrero Jr., Bo Bichette and Marcus Semien.

Jake Cronenworth, 2B, Padres
2020 stats: 54 G, .285/.354/.477, .831 OPS, 4 HR, 20 RBIs
2021 stats: 52 G, .292/.363/.436, .798 OPS, 5 HR, 18 RBIs

The versatile utility infielder's numbers are almost eerily similar from 2020 to '21 -- look at his batting average, on-base percentage ... even his home run, RBI, stolen-base, walk and strikeout totals. That's a good thing for the Padres, because it means they have a well-above-average hitter in the middle infield (130 OPS+ last year, 118 OPS+ this year). Cronenworth was an unheralded Rookie of the Year contender in 2020, and he's basically the same player now. And that doesn't even count the 27-year-old being an excellent defender, with a +7 Outs Above Average in 2020 and +6 OAA so far in '21 (both top five among infielders).

Trent Grisham, CF, Padres
2020 stats: 59 G, .251/.352/.456, .808 OPS, 10 HR, 10 SB, 26 RBIs
2021 stats: 36 G, .301/.383/.515, .898 OPS, 6 HR, 7 SB, 14 RBIs

Speaking of the Padres -- they've got another for-real followup player in center field. That the 24-year-old Grisham, who, although he's on the IL right now with a heel bruise, looks like an impressive two-way offensive/defensive player like Cronenworth. Grisham has displayed Gold Glove-caliber defense in center, and he's a great on-base threat at the plate, to go along with a nice little power-speed combo -- he should easily reach double-digit homers and steals for a second straight year once he comes back.

Corbin Burnes, RHP, Brewers
2020 stats: 12 G (9 GS), 59 2/3 IP, 2.11 ERA, 88 K, 13.3 K/9
2021 stats: 8 GS, 46 1/3 IP, 2.33 ERA, 74 K, 14.4 K/9

Burnes always had absolutely electric stuff, but last year was the first year he commanded it, and that made him a surprise Cy Young Award contender. This year it's not a surprise. Starting with his MLB-record streak of 58 strikeouts without a walk to open the season, the 26-year-old righty has been pitching like an ace, and he could be right back in that Cy Young mix by the end of the season.

Kevin Gausman, RHP, Giants
2020 stats: 12 G (10 GS), 59 2/3 IP, 3.62 ERA, 79 K, 11.9 K/9
2021 stats: 10 GS, 64 2/3 IP, 1.53 ERA, 76 K, 10.6 K/9

You might have missed Gausman's resurgence in his first season in San Francisco in 2020, but it happened -- the 30-year-old veteran righty found new life on his pitches and rode it to career-best strikeout rates. His fastball-splitter combo has Gausman even more effective in '21, as he's continued to strike out double-digit batters per nine innings but with an ERA that's second-best in the league behind only Brandon Woodruff, among qualified starters.

Julio Urías, LHP, Dodgers
2020 stats: 11 G (10 GS), 55 IP, 3.27 ERA, 45 K, 7.4 K/9
2021 stats: 11 GS, 67 1/3 IP, 3.61 ERA, 75 K, 10.0 K/9

Though he pitched in a swingman role for the loaded Dodgers for much of his early career, Urías got a bigger shot as a starter last season and looked good when he did. Now he's in the L.A. rotation for real and doing everything the Dodgers could have hoped for, even after a bump in the road in his start against the Giants on Saturday. Urías is striking out over eight batters for every one he walks -- with 75 K's and only nine free passes, his strikeout-to-walk ratio is second-best in the league. Urías, Trevor Bauer, Clayton Kershaw and Walker Buehler are a tough quartet to beat.

Chris Bassitt, RHP, A's
2020 stats: 11 GS, 63 IP, 2.29 ERA, 55 K, 7.9 K/9
2021 stats: 11 GS, 70 IP, 3.21 ERA, 74 K, 9.5 K/9, 1 SHO

Bassitt was MLB's best pitcher down the stretch in 2020 (0.34 ERA in September), a run that came out of nowhere. But the 32-year-old has continued to lead the A's pitching staff in '21. Only Shane Bieber, Tyler Glasnow and Gerrit Cole have more strikeouts in the AL than Bassitt. Only Cole, Bieber and John Means have thrown more innings. Bassitt's gone at least seven in four of his five May starts and just pitched his first career complete game and shutout against the Angels.

James Karinchak, RH RP, Indians
2020 stats: 27 G, 27 IP, 1 SV, 2.67 ERA, 53 K, 17.7 K/9
2021 stats: 24 G, 22 2/3 IP, 6 SV, 1.59 ERA, 42 K, 16.7 K/9

Karinchak emerged as an elite relief ace in Cleveland as a rookie in 2020, and his power fastball and extreme overhand curve give him the type of stuff that make you think he isn't going anywhere. The 25-year-old struck out nearly half the batters he faced in '20 -- his 48.6% strikeout rate was second-highest among relievers -- and he's right at that level again in '21, with a 48.3% strikeout rate this season that ranks second again.