The holy grail of sports franchises is retiring numbers, honoring past athletes for their contributions for all time. Some sports starts are still waiting for the deserved honor, while others had their numbers unretired, either temporarily or permanently.
Here's a look at 25 jerseys that should be retired or have been unretired.
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Arguably the greatest hitter in baseball history, Bonds played 15 seasons with the Giants, finishing with an unbelievable 1.143 OPS in that span. However, he retired under a cloud of scandal, so his No. 25 has yet to be retired by the Giants.
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The Steelers have retired only two numbers in franchise history, and Bradshaw isn't one of them. He led Pittsburgh to four Super Bowls at quarterback, so it is surprising the team hasn't retired No. 12 in his honor.
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Clemens had 13 dominant seasons with the Red Sox, winning three Cy Young Awards and one MVP. However, he didn't exactly have the most harmonious exit when he took the money and ran to Toronto in 1997, and there were suspicions of PEDs later in his career — not to mention his six-year stint with the rival Yankees. As a result, retiring No. 21 hasn't been on the agenda for the franchise.
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Detroit has retired only seven numbers in its storied franchise history, but it seems like only a matter of time before Datsyuk sees his name and number in the rafters. The beloved former Red Wing played 15 seasons and was a two-time Stanley Cup winner.
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Gerald Ford, Michigan football
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The 38th President of the United States, Ford was an accomplished football player at the University of Michigan. His No. 48 was unretired as part of the team's "legends" program but has since been retired once again.
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Perhaps it's only a matter of time, but Garnett is surely deserving of having his number retired in Minnesota, if not Boston as well. He wore No. 21 for the Timberwolves over 14 seasons, averaging 19.8 points and 11 rebounds per game with the team.
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Gooden's stay with the Mets was relatively brief — 11 seasons — but also spectacular. He won the 1984 Rookie of the Year, 1985 NL Cy Young and 1986 World Series in one of the most incredible career beginnings in MLB history. Gooden's Hall of Fame candidacy was marred by off-field issues, but his contribution to the Mets and No. 16 are worthy of enshrinement in New York.
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Darrell Green, Washington Redskins
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Sammy Baugh's No. 33 is the only number that Washington has retired, but Green's No. 28 is long overdue. The seven-time Pro Bowl cornerback is arguably the best player in franchise history and won two Super Bowls with the team, spending his entire 20-year career in Washington.
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The Colts have taken care of Peyton Manning by retiring No. 18, but they've yet to honor either of his key wideouts, Harrison and Reggie Wayne. Harrison is now a Hall of Famer and made eight Pro Bowls with the Colts, spending his entire 13-year career in Indy. He's in the top 10 all time in receptions, receiving yards and receiving touchdowns.
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The Texans are a young franchise, joining the NFL in 2002, and it's about time they honor their first great player. Johnson played 12 seasons in Houston, making seven Pro Bowls, and is 11th all time in receptions and receiving yards in NFL history. The No. 80 should be his in Houston for life.
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The Ravens have yet to issue the No. 52 to a player since Ray Lewis retired, but it's time they make the retirement of his number official. The best defensive player of his era, Lewis made 13 Pro Bowls and was twice named of the AP Defensive Player of the Year. He also helped lead the franchise to two Super Bowls.
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Lowe has meant an incredible amount to the Oilers franchise, winning six Stanley Cups as a player in 15 seasons with Edmonton. Following his playing career, Lowe served as a coach, GM and president of hockey operations. Arguably the franchise's greatest defenseman ever, he is deserving of his number being retired.
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While McGwire set his single-season home run record in St. Louis — since bested by Barry Bonds — it was Oakland where he did most of his damage. The first baseman played 12 seasons for the A's, hitting 363 home runs with a .931 OPS and winning the 1987 AL Rookie of the Year. Unfortunately, his No. 25 may never be retired under the cloud of the steroid era.
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Munoz is arguably the greatest offensive lineman in the history of the NFL as a nine-time All-Pro. However, the Bengals franchise has only retired one number in its history: Bob Johnson's No. 54.
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The Bills have honored Jim Kelly and Bruce Smith for their incredible early '90s run, and Thurman Thomas's number is set to be retired in 2018. That only leaves Reed, who was as much a part of the team's incredible run as that trio, making seven Pro Bowls and the Pro Football Hall of Fame. The wideout played 15 seasons in Buffalo and should see his No. 83 retired eventually.
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An accomplished running back at Kansas and in the NFL for the Washington Redskins, Riggins' No. 32 was effectively unretired by the Jayhawks due to multiple off-field incidents.
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A-Rod played more seasons with the Yankees than any other franchise, 12 in all. During that time, he won two MVP Awards and one World Series at the hot corner. His stats, including 351 home runs in pinstripes, are deserving of retiring his No. 13. However, it probably won't ever happen due to his use of PEDs.
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Rollins' No. 11 is likely to be retired eventually after a great 15-year career in Philly. He won the 2007 MVP and helped lead the franchise in the 2008 World Series. The shortstop was a three-time All-Star and four-time Gold Glove winner who also has a shot at the Hall of Fame, and he holds the record for most hits in Phillies history.
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As perhaps the greatest defensive player in Bears history, it's remarkable that the franchise hasn't retired his number. During 12 seasons, he was a seven-time All-Pro and 10-time Pro Bowler, winning Defensive Player of the Year twice. However, the Bears have retired so many numbers in their history that there might not be room for No. 50 to be retired.
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The Cowboys don't retire numbers, but Smith is certainly deserving. He remains the NFL's all-time leader in rushing yards and rushing touchdowns and won three Super Bowls with the Cowboys.
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Sosa's standing with the Cubs franchise has been on shaky ground, and he's been suspected of PED use. Still, he deserves recognition for what he did for the Cubs over 13 seasons, hitting more than 60 home runs three times and winning the 1998 NL MVP during the incredible run alongside Mark McGwire.
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Strahan is now known as a host of "Good Morning America," but he's also one of the greatest pass rushers in NFL history. He still holds the single-season sack record (22.5) and ranks sixth all time in sacks, spending his entire 15-year career with the Giants. While the Giants have retired 12 numbers in their history, Strahan's No. 92 isn't one of them.
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Ichiro seems likely to have his number retired by the Mariners sooner than later. He unofficially retired to join the Seattle front office just weeks ago and spent parts of 13 seasons with the franchise. He won the AL Rookie of the Year and MVP in 2001 and had a 10-year run of All-Star appearances from 2001-2010 while representing the Mariners franchise. His No. 51 is unlikely to be worn by another player.
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Taylor is enshrined in the Pro Football Hall of Fame after a 15-year career, including 13 seasons with the Dolphins. He made six Pro Bowls and was the 2006 Defensive Player of the Year, but his No. 99 hasn't been retired by the Dolphins.
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Tripucka played only four seasons with the Broncos from 1960-1963, but his play was enough for the franchise to retire his No. 18. That was until Peyton Manning arrived in 2012, and Tripucka's No. 18 was unretired for four seasons.