He'd retire, but Clemns stands to make too much money-- in just half a season.

9. Trent Green, QB, Miami Dolphins
Green's concussion history is well-documented, especially this NFL season. He's taken some vicious hits against the Chiefs and Texans the last couple years. The hit he suffered from Bengals' DE Robert Geathers in the 2006 opener was especially bad. I can remember Green lying motionless on his back as the pouring rain was pelting him in the face. He remained motionless. And the hit he took while throwing a block this season in Houston is the hit that should end his career.

8. Julio Franco, 1B, Atlanta Braves
He's 49 years old and turns 50 during next season. He eats at least a dozen eggs whites every day for breakfast. He's done the same thing every day since 1982. I can't believe he's only played for eight different teams. Milwaukee gave up on him 10 years ago, and he could have called it quits then. Hell, he was 39 years old then! But the resilient Franco kept eating his eggwhites(as part of his 5000 calories/day diet), lifting weights six days a week, and hitting. But Julio, enough is enough. Play until you hit 50, then call it a career. You don't have many more years left to live.

7. Terrry Labonte, NASCAR
One of racing's 50 best drivers of all time, Labonte has been driving in NASCAR for the past 30 years. He's driven in 851 races, having collected 22 wins in the sport's top division. He stopped driving full-time several years ago, and he's only driven in a few races this season. When he broke Richard Petty's "consecutive races started streak" in 1996 and extended it to a total of 655 straight in the year 2000, it seemed he would never stop. But as happens with all drivers, the elder of the racing Labonte brothers has lost a little strength, stamina, and reaction time with his growing age. He knows it's time to pull his car into the garage for the last time, and so does everyone else.

6. Joe Paterno, Head Coach, Penn State Football
He still walks to every home game at Beaver Stadium in College Station. He recruits as well as anyone even though he doesn't even know how to turn on a computer. He can coach through broken legs, diarrhea, and an 80-year-old body. The man was born in 1926 for gosh sakes. I suppose he's still coaching because he loves it. He doesn't need any more records. His 371 wins will stand the test of time whether or not the total remains number one. He's been coaching the boys by Mount Nittney for 58 seasons, as Head Coach since 1966. Simply put, JoePa has had enough. Someone just needs to convince him of that. Good Luck.

5. Barry Bonds, OF, San Francisco Giants
You could argue that Barry could rank #1 on this list. You could also argue that he should be left off this list completely. This debate could go on for hours, so for the sake of balance I'll put him somewhere in the middle. Number 5 sounds good. Did he take steroids? Probably. Is he the best player of his generation? Without a doubt. Can he still hit? For Sure. Can he still run? Yeah, like your 90-year-old grandfather. His 43-year-old body, knees in particular, have taken a beating over the years. He's currently a free agent will consider playing next year. Sure, he could play somewhere next year as a designated hitter, but what would it prove? What else does he need to do, feed his ego and prove everybody wrong? I guess so. Maybe he should just call it quits and disappear for awhile until we all learn the complete truth about his steroid allegations.

4. Kevin Willis, C, Dallas Mavericks
He's the oldest NBA player since Robert Parish played at age 43 with the Chicago Bulls in the 1996-97 season. Born in 1962, the 44-year-old Willis is only four years younger than his team's owner, Mark Cuban. I know, most average sports fan probably think Willis retired years ago, but Cuban brought him back after he passed his physical last season, and he actually made the playoff roster. He's about 26 years older than the youngest player in the league, Seattle Rookie Kevin Durant. I have a feeling Willis will officially hang up his sneakers after this season. Then again, I've been thinking that since 1999.

3. Morten Andersen, K, Atlanta Falcons
He doesn't quite have the single-bar facemask, but he may as well. The 25 season veteran reminds me of the old hockey  player turned Edmonton Oilers coach Craig MacTavish. MacTavish was the last NHL player to go without a helmet during play. He was grandfathered in after the rule came into effect. I can remember tuning in to St. Louis Blues games in the mid-1990's just to see his curly brown hair flowing through the air. It was almost a sideshow, like Andersen. When I see the Falcons on television I can't wait to see him trot onto the field to put everything he has into that 30-yard field goal. I was surprised to see he actually made a 47-yard field goal this season. I can't believe the 47-year-old Morten Andersen is still in the league, because he shouldn't be.

2. Roger Clemens, P, New York Yankees
A free agent this offseason, Clemens will again keep people holding their breaths. Though it seems this past season was probably his last, he'll still come back next season if someone lets him golf until mid-June and gives him $1 million per start. Who wouldn't he? He's a mercenary, a hired gun; an over-the-hill one at that. He's still intimidating on the mound despite the fact his fastball rarely reaches 93 mph anymore. The 45-year-old has been pampered contractually as much as any athlete we've seen, and that's just one reason I think it's time for him to call it quits. Then again, he could bring his seven Cy Young Awards to the city nearest you if you give him what he wants. This guy would sign a ridiculous contract on ego alone. Take note of his four sons names, all of which begin with the letter "K". I guess he loves the strikeout almost as much as he loves to keep the baseball world hanging. Give up, Rocket!

1. Evander Holyfield, Boxer
Don't get me wrong; for a 45-year-old man, Holyfield is in great shape. He can still move, as evident on his stint on "Dancing with the Stars". But if you've heard this man speak for more than 30 seconds you'd swear he has some mild form of brain damage. I can only imagine how many thousands of brain-jarring hits Evander has taken over the years. The first four-time and only five-time Heavyweight Champion could literally die in the ring. It could really happen. "The Real Deal" has really taken a beaten for decades. There's no reason for him to stick around; every fight and possibly every punch he takes could be cutting into his lifespan. His 42 wins is an incredible total, but no one will remember that if he dies in the ring. He can't beat anyone but a tomato can these days, but I guess the man needs to get paid. He may need some more cash to support his nine illegitimate children.