Robert Clayton Groff[1] (born January 31, 1966, in Mission Hills, California), is a former driver in the Indy Racing League and CART Championship Car series and is brother of Mike Groff. He raced in the 1994 CART season and 1997-1998 IRL seasons with 9 combined starts. His best career finish was in his first race, a ninth place at the 1997 Indianapolis 500.
(key) (Races in bold indicate pole position)
| Year | Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | Rank | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | Groff Motorsports | PHX 8 |
LBH 6 |
MIL 3 |
DET 7 |
POR 12 |
CLE 9 |
MEA 9 |
TOR DNS |
DEN 10 |
VAN | MDO 3 |
ROA 5 |
NAZ 1 |
LS 3 |
5th | 104 |
| 1991 | Groff Motorsports | LBH 3 |
PHX 1 |
MIL 1 |
DET 5 |
POR 9 |
CLE 3 |
MEA 4 |
TOR 10 |
DEN 13 |
MDO 15 |
NAZ 7 |
LS 15 |
7th | 107 | ||
| 1992 | Groff Motorsports | PHX 2 |
LBH 2 |
DET 15 |
POR 4 |
MIL 2 |
NHA 12 |
TOR 5 |
CLE | VAN 10 |
MDO 1 |
NAZ 4 |
LS 1 |
4th | 128 | ||
| 1993 | Bradley Motorsports | PHX 3 |
LBH 5 |
MIL 15 |
DET 3 |
POR 14 |
CLE 4 |
TOR 5 |
5th | 103 | |||||||
| Groff Motorsports | NHA 2 |
VAN 16 |
MDO 19 |
NAZ 4 |
LS 3 |
| Year | Team | Chassis | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Rank | Points | Ref |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1994 | Bettenhausen Motorsports | Penske PC-22 | Ilmor 265C/D V8t | SRF | PHX | LBH 13 |
IND | MIL | DET | POR 13 |
CLE | TOR | MIC | MDO | NHA | VAN | ROA | NAZ | LS | 34th | 0 | [2] |
| Year | Team | Chassis | No. | Engine | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Rank | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996-97 | McCormack Motorsports | G-Force GF01 | 30 | Oldsmobile Aurora V8 | NHM | LVS | WDW | PHX | INDY 9 |
TXS 15 |
PPIR 10 |
CLT 13 |
NH2 10 |
LV2 18 |
20th | 135 | |
| 1998 | Blueprint Racing | Dallara IR8 | 27 | WDW 28 |
PHX DNQ |
INDY | TXS | NHM | DOV | CLT | PPIR | ATL | TX2 | LSV | 41st | 2 |
| Years | Teams | Races | Poles | Wins | Podiums (Non-win) |
Top 10s (Non-podium) |
Indianapolis 500 Wins |
Championships |
|---|---|---|---|---|---|---|---|---|
| 2 | 2 | 7 | 0 | 0 | 0 | 3 | 0 | 0 |
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