20. Roger Staubach
> Season: 1979
> Age: 37
> Position, team: Quarterback, Dallas Cowboys
> Key stat: 3,586 pass yds, 27 TDs
Two-time Super Bowl champion Roger Staubach had already established himself as an NFL legend by 1979. But he played his best football in his final season, racking up 3,586 pass yards and 27 touchdowns that season — both career highs.
19. Jamir Miller
> Season: 2001
> Age: 31
> Position, team: Linebacker, Cleveland Browns
> Key stat: 13 sacks, 22 tackles for loss
For his first seven seasons, Jamir Miller was a solid outside linebacker, totaling 23 sacks. But his eighth and final season was spectacular. Miller amassed 13 sacks and 22 tackles for loss — both figures more than double any of his previous seasons. Unfortunately, Miller tore his Achilles the following preseason and had to end his career.
18. Will Clark
> Season: 2000
> Age: 36
> Position, team: First base, Baltimore Orioles / St. Louis Cardinals
> Key stat: .319 batting average, 21 home runs
First baseman Will Clark played his best baseball in his 15th and final season. He played well for the Baltimore Orioles, hitting over .300. But the team decided to trade him to the St. Louis Cardinals mid-season. There, he hit .345 and helped the Cards secure a playoff berth. Altogether, Clark posted a .964 OPS in 2000, the best of his career.
17. Syl Apps
> Season: 1947-48
> Age: 33
> Position, team: Center, Toronto Maple Leafs
> Key stat: 53 points
Toronto Maple Leafs center Syl Apps saved his best season for last. The Hall of Famer set a career high for points that season with 53 in just 55 games — 26 goals and 27 assists. He also led the league in power play goals with 11. His offensive prowess helped the Maple Leafs win their second straight Stanley Cup.
16. Tarik Glenn
> Season: 2006
> Age: 30
> Position, team: Tackle, Indianapolis Colts
> Key stat: 16 starts, Pro Bowl
Tarik Glenn was a key piece of the Indianapolis Colts 2006 Super Bowl season. He protected Peyton Manning’s blindside for all 20 regular and postseason games, earning a Pro Bowl nod and retiring as a champion.