3. Chipper Jones

2. George Brett

1. Mike Schmidt

Others considered:
Wade Boggs: 12 straight All-Star teams, 3000+ hits, lifetime .328 avg and .418 obp, 130 OPS+, batted over .350 five times, 1 Ring (oddly enough, it was as a Yankee)
Eddie Mathews: 143 OPS+, 512 HR
Brooks Robinson: 15 straight All-Star teams, 16 straight Gold Gloves, 1 MVP & 7 top-10 MVPs, 2 Rings. With the bat, he was essentially Rusty Staub (who was better than you might think) You can't hit .267/.322/.401 and be the best ever! Bill James rates Ron Santo ahead of Brooks Robinson.
Current players who could be in the conversation:
David Wright: He's 26, has 4 All-Star games, 3 top-tens in MVP, 2 questionable Gold Gloves. He's the face of the Mets. Too bad Citi Field has sucked all his power away.
Evan Longoria: He's 23, ROY, 2 All-Star teams, the sky is the limit
Alex Rodriguez: When he has played more games at the hot corner than at short, he'll go up in the ranks for sure.
It's on the the outfield next. But not before a little more Tito love!