What were the rosters for the World Series game played on October 13, 1971?

On October 13, 1971, the Baltimore Orioles squared off against the Pittsburgh Pirates in Game Four of the World Series, with Baltimore leading two games to one. The rosters for the two teams that day were:

Baltimore Orioles
Paul Blair cf
Mark Belanger ss
Merv Rettenmund lf
Frank Robinson rf
Brooks Robinson 3b
Boog Powell 1b
Davey Johnson 2b
Andy Etchebarren c
Pat Dobson p
Grant Jackson p
Eddie Watt p
Pete Richert p

Pittsburgh Pirates
Dave Cash 2b
Richie Hebner 3b
Roberto Clemente rf
Willie Stargell lf
Al Oliver cf
Bob Robertson 1b
Manny Sanguillen c
Jackie Hernandez ss
Vic Davalillo ph
Luke Walker p
Bruce Kison p
Dave Giusti p

The Pirates won the game, 4-3, and used an error in the bottom of the seventh to score the winning run. With the score tied at 3-3, and Pirates on first and second, Vic Davalillo pinch-hit for Jackie Hernandez. He hit a fly ball that was dropped by centerfielder Paul Blair, allowing the lead runner, Bob Robertson, to reach third. He scored on a single by the next batter, Jerry May. Dave Giusti shut down the Orioles the rest of the way, earning the save, and the Pirates went on to win the series in seven games.