San Diego third baseman Chase Headley drove in a run in Sunday's loss to the Giants, giving him 30 for September. He knocked in 31 runs in August.
The only other Major League player to register 30 or more RBIs in two consecutive calendar months was Albert Pujols in April-May 2006, when he was with the Cardinals, according to Elias.
Headley is the first player with two 30-RBI months for the Padres, not only in consecutive months and not only in two months within one season, but in his career with San Diego.
In August, Headley hit .306 with 10 home runs, 31 RBIs and a .345 on-base percentage. For September, Headley hit .324 with nine home runs and 30 RBIs to go with a .410 OBP.
"That was as good a two months as you'll have," said Padres manager Bud Black.
Headley got a ringing endorsement from Brewers manager Ron Roenicke before Monday's game at Miller Park.
"To have that [production] in San Diego, that's pretty amazing," Roenicke said. "He needs to be talked about a lot more than he has been. To have that kind of year in that place? Phenomenal."
Black, knowing Monday's game against the Brewers marked the start of three games to end the regular season, offered a joke at Headley's expense.
"I hope he has a great October," Black said, smiling.
Results of the voting will be announced on Tuesday.