Rice was still putting up pretty good numbers after he got old and was playing for the Raiders in his 17th, 18th, and 19th seasons.
16 games 92 rec 1,211 yds 7 TDs was his line from his 18th season.
By the time Moss' 18th year rolled around, he'd been retired for four years. As for his production going up when he left the Raiders to go to the Patriots, ya think? He left Marques Tuiasosopo, Aaron Brooks and a horrible Raiders team for Tom Brady and a perennial winner. You think his effort might have picked up a bit, too?