In all honesty if Richo stays injury free he could play 3 more seasons including finals assuming the teams upward trend continues and realistically he could get closer to 350 than 300.
Currently on 276
Turns 34 on Thursday
With the engine he has could play till 2011 which would make him 36.
22 games a season = 66 more
2-3 finals a season a possibility
350 or 351 with no injuries
With nigging injuries somewhere between 330-350.
Would be 2nd on the all time games played list for the Tiges.