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Grant Wistrom, a free agent defensive end who didn't have many suitors this off-season, has decided retire, according to NFL Network. Wistrom played the first six years of his career with the Rams and the last three with the Seahawks, notching 53 sacks in his career.

Wistrom is 30 years old and never had more than four sacks in any of his three seasons in Seattle, so it's not like he would have signed a huge contract, but there's no doubt he could have found some team willing to sign him as its third defensive end and give him a salary in the $1 million to $2 million a year range. I don't know the details of Wistrom's decision-making, but I have a feeling he decided that he had made enough money, and that what he could earn in another few years wasn't worth the toll that another few years would take on his body.

There are a whole lot of ex-NFL players in their 40s and 50s who wish they had made that very decision. Wistrom has never been a superstar, but he was a good, solid player, and by walking away while he can, he's showing that he's a smart player as well.