He's 44 years old, officially listed at 5-foot-11, 285 pounds and has been pitching in the majors since the Clinton administration.
He's old enough to have played against Minnesota Twins manager Paul Molitor, yet was named an All-Star as recently as 2016.
He has earned the nickname "Big Sexy," and attempted to trademark it.
That's right, Bartolo Colon is here, and he's starting for the Twins on Tuesday.
Who is this guy, and why is this such a big deal?
Gather 'round, folks, for the legend of the man they call "Big Sexy."
Bartolo has been around forever
Colon, then with the Cleveland Indians, made his first major-league appearance on April 4, 1997. The Los Angeles Angels of Anaheim were still the Anaheim Angels and Manny Ramirez was still a fresh-faced Indians outfielder. Colon went five innings, allowing six hits and four runs, all earned, and a two-run homer. He's also outlasted everyone who played in that game by, at the least, five years.
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Colon vs. Molitor
He's old enough to have pitched against his manager, who faced Colon in his last game on Sept. 27, 1998. He went 1-for-3 against Colon, helping the Twins to a 6-2 win.
Colon appeared in 31 games that season -- up from 19 as a rookie in 1997 -- and finished the year with a 3.71 ERA and a 1.392 WHIP in 204 innings.
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The last of the Expos
He's played for 10 different MLB teams, including one that no longer exists. Colon played for the Montreal Expos in 2002, appearing in 17 games before being sent to the Cleveland Indians at the trade deadline. He is the last active major leaguer to have played for the Expos -- who relocated and became the Washington Nationals in 2004 -- and has been since last year, when infielder Maicer Izturis retired at age 35.
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Cy Still Pretty Young
Colon won the AL Cy Young Award in 2005, going 21-8 with a 3.48 ERA for the Angels. He promptly missed most of the 2006 season with a rotator cuff injury, then bounced from Boston to Chicago to New York, before resurfacing in Oakland. The 40-year-old somehow revived his career with an All-Star season in 2013, then embarked on a three-year run with the Mets that led to another All-Star appearance in 2016.
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Bartolo in the record books
Colon set a modern baseball record back in 2012, when he threw 38 consecutive strikes while pitching for the Oakland A's. The streak produced two strikeouts and two base hits, and is the longest streak of consecutive strikes since the league began recording such pitch data in 1988.
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Bartolo finally goes deep
Despite spending parts of five seasons in the National League, he had never hit a home run heading into the 2016 season. The 43-year-old finally pulled it off, taking San Diego Padres pitcher James Shields deep on May 7, 2016 and becoming the oldest player in major-league history to hit his first career home run.
USA TODAY SportsJake Roth
Bartolo dreams big
Colon had big ambitions back in 2015. His last contract with the Mets, a one-year, $7.25 million extension, included one particularly optimistic clause. Colon would have received a $50,000 bonus for winning a Silver Slugger award. Unfortunately, Colon's 20-year batting average of .086 didn't improve quite enough to net him the bonus. He hit .083 in 60 at-bats for the Mets, narrowly losing the award to Chicago Cubs pitcher Jake Arrieta, who hit .262 with two home runs.