Boss Phil Parkinson hailed Bolton's resilience after securing a 2-0 win at Millwall.
Sammy Ameobi rifled home from 25 yards after just three minutes, with Millwall subsequently fighting back without reward at The Den.
David Wheater slotted in a cool finish to seal the points late on as the hosts failed to clear from a corner, with Bolton now three points off top spot.
Parkinson, whose side have now kept four successive clean sheets, said: "I'm very pleased. It's a difficult place to come, as everybody knows.
"We stood strong as a team. We withstood pressure at times, we played with calmness and quality at other times and it was a good win for us. It was hard-fought but we expected it to be.
"Coming to Millwall, you've got to stand strong. I've played here before, I've managed teams here before and got beat, I've watched games where teams don't stand strong and they're two or three-nil down before they realise they're in a game."
Parkinson was also quick to single out one man for praise, with Mark Beevers shining on his return to the side he left over the summer after three years.
"I thought Mark was outstanding at the back," Parkinson added. "It's always a test when you come back to your old club.
"He loved his time here and, even though the supporters give a bit of stick, they appreciated his efforts while he was here. He was a colossus for them and for us in this game."
Victory at Northampton on Saturday ended a run of four successive defeats for Millwall but boss Neil Harris admitted it was the visitors' quality in front of goal which ultimately proved decisive.
"I thought they defended really well, fair play to Bolton. They defended their box exceptionally well," he said.
"They scored two really good goals, I'm not going to fault anyone for the goals. The finishes themselves were excellent, top drawer, but it's the build-up to the corners we conceded for the two goals where we've got to be better.
"I thought we were really good for 70 minutes, barring the last 10 minutes after the goal and the first 10 minutes where we didn't quite find our feet.
"It's the second game running where we were the same - against Rochdale we were excellent for 70 minutes - but the boys have to realise it's a 90-minute game.
"We've been punished for errors in previous weeks but this time it was just really good goals.
"We maybe just lacked that little bit of creativity. Maybe, at key moments, we just didn't quite have the run of the ball in the penalty area."
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