Player: Bill Buckner
Year: 1987
Brand: Donruss
Number: 183

Player: Otis Nixon
Year: 1994
Brand: Flair
Number: 265

Player: Roger Clemens
Year: 1990
Brand: Score
Number: 399
Comments: See? His body never changed.

Player: Ellis Burks
Year: 1988
Brand: Topps
Number: 269

Player: John Kennedy
Year: 1973
Brand: Topps
Number: 437

Player: Jim Rice
Year: 1987
Brand: Donruss
Number: 182

Player: Rick Cerone
Year: 1990
Brand: Fleer
Number: 270

Player: Greg Harris
Year: 1990
Brand: Donruss
Number: 582

Player: Mo Vaughn
Year: 1992
Brand: Donruss Triple Play
Number: 79

Player: Ken Ryan
Year: 1993
Brand: Pinnacle
Number: 278

Player: Wade Boggs
Year: 1990
Brand: Topps
Number: 387

Player: Calvin Schiraldi
Year: 1988
Brand: Topps
Number: 599

Player: Kevin Morton
Year: 1992
Brand: O-Pee-Chee
Number: 7

Player: Dwight Evans
Year: 1988
Brand: Donruss
Number: Diamond Kings 16

Player: Carlos Quintana
Year: 1989
Brand: Donruss
Number: 37

Oldest player to have a season OPS above 1.000

In 1960, Ted Williams posted an OPS of 1.096. He was 41 years old.

note: For the sake of sample size, I only included batters with more than 200 at bats in my query. Williams had 310.