Jim Harbaugh finally achieved the ultimate goal after returning to his alma mater as the head coach.After years of coming up short against rival Ohio State, Harbaugh led Michigan to three straight wins in the rivalry and three straight Big Ten titles. His final campaign saw Harbaugh and the Wolverines go undefeated in the regular season, win the Big Ten, beat Alabama in the Rose Bowl and finally top Washington in the national championship game.Harbaugh, 60, left after the 2023 NCAA season to coach the Chargers, returning for his second stint as an NFL head coach after coaching the 49ers from 2011-14.But he returned to Michigan for the Wolverines' spring game, and he showed off a new mark. On his right shoulder was a tattoo recognizing Michigan's 15-0 season.Jim Harbaugh is back in Ann Arbor today for the national title ring ceremonyAnd got his tattoo he promised James T. Yoder (@JamesYoder) Why did he get a tattoo? Here's what you need to know.MORE: Jim Harbaugh Michigan football tattoo, explainedHarbaugh got a simple tattoo on his shoulder with Michigan's block M atop the team's record from its national championship campaign: a perfect 15-0.Before the season, Harbaugh if they completed an undefeated season. Following the title win against Washington, he doubled down on that promise"I'm gonna get a tattoo that says 15-0. I'm doing it," Harbaugh said. "I made that vow, I made that promise and I'm going to do it."Jim Harbaugh delivered on his promise to get a 15-0 tattoo for Michigan's undefeated national championship season : , The Sporting News (@sportingnews) Harbaugh is a man Andrew Saalfrank Jersey (https://www.diamondbacksday.com/arizona-diamondbacks-jersey/andrew-saalfrank-jersey) of his word, and he wound up getting the ink.MORE: Michigan football championship ring, explainedThe Wolverines will receive their championship rings Saturday during the team's spring game.The ring draws inspiration from the shape and size of Michigan Stadium and features white stones and the block M logo, which is carved using blue stones. The College Football Playoff trophy sits behind the block M, and it is capped off with a white stone.There are fifteen white stones along the top of the ring to represent each of the team's wins and there are 12 baguette stones that represent the 12 titles from the Wolverines. On the left of the ring is the player's name and NRG Stadium, where Michigan won the title. The final score of the national championship is on top of the stadium with the player's jersey number in front.Hail! Hail! to Michigan the leaders and best Michigan Football (@UMichFootball) The Harbaugh family's catchphrase, "Who's got it better than us? Nobody!" wraps around the edges of the ring. On the right side of the ring, "Michigan vs. Everybody" is written out with the 2023 championship logo. Inside the ring features the school motto, "Those who stay will be champions," along with the record and the CFP logo. The outside of the band has the word, "Bet" printed on it.In the last year of the four-team playoff, the University of Michigan capped off an extraordinary undefeated season with their programs 12th national championship title, Chris Poitras, SVP and GM of Jostens Profe sional and College Sports Division, . Jostens is proud to partner with Michigan to celebrate their remarkable 2023 season with four uniquely designed championship rings that capture all the most meaningful pieces of their story. It is our distinct honor to help bring that story to life on these rings. Chris Rodriguez Jersey (https://www.diamondbacksday.com/arizona-diamondbacks-jersey/chris-rodriguez-jersey)