Montero admitted after the game that he was a little confused. Saturday was the third time he's caught Lester, who has been matched up with Ross for his other starts. Ross was away to deal with a family matter.
Lester does have some problems throwing out baserunners, and he and Ross have devised a plan, which includes adjusting the pitcher's delivery times.
"To this point, I think we've done a good job of dealing with it," said Maddon. "Last night, it hurt us. We'll get David back and straighten it out."
• One of the Cubs eager to return to Wrigley Field is Kris Bryant, who is batting .290 at home compared to .237 on the road, entering Sunday night. He'd hit 17 of his 21 home runs at Wrigley as well.
"I'm surprised I do better at home, because the wind's been blowing in," said Bryant, who is still adjusting to the backdrops in big league ballparks in his rookie year. "It's all about how you feel up there."
Did Bryant have any nightmares after facing Madison Bumgarner and Clayton Kershaw in back-to-back games?
"That was a tough stretch," Bryant said. "They're expected to do that, almost. You've got to go into the game with almost a reckless approach to try to get them off their game. We tried it, but they have their stuff. Both of those guys are unbelievable pitchers. Tip your cap."
• Neil Ramirez began a rehab assignment Sunday with Double-A Tennessee, giving up one hit, walking one and striking out one in one inning. The right-handed reliever has been limited to 8 2/3 innings over 13 games because of injuries. He went on the disabled list July 29 with abdominal soreness.
• The Cubs and Pirates will play a split day-night doubleheader on Sept. 15 at PNC Park to make up an Aug. 3 game that was postponed by rain. The first game will start at 12:35 p.m. CT, with the regularly scheduled game starting at 6:05 p.m. CT.
• On Wednesday, manager Joe Maddon and his wife, Jaye, will host "Respect the Main Event" at Ravenswood Event Center. The charity boxing event will feature local youth boxers at various skill levels, as well as a special main event bout. Guests will sit ringside with Cubs players, and enjoy cocktails, hand-rolled cigars and spirits tasting stations, dinner courtesy of Gibsons Bar & Steakhouse and a premium auction including wine and unique sports memorabilia.
A limited number of general admission tickets are available for $300 at cubs.com/maddon. A portion of the net proceeds will benefit Crushers Club's youth boxing program in Chicago's Englewood neighborhood.