Former Southampton and Liverpool striker Lambert did not start the Premier League match against the Hammers at the Boleyn Ground on Sunday afternoon, but came on as a substitute at half time.
The 33-year-old England international took two shots, had a pass accuracy of 65%, created one chance, put in one cross, and made one clearance.
“We didn’t do very well in the first-half but we changed it in the second-half,” Rondon told West Brom’s official website. “Rickie Lambert entered the pitch and the game was different.”
Hosts West Ham took the lead in the 17th minute through Mauro Zarate, but an own goal from Winston Reid in the 50th minute saw the Baggies pick up a point from the encounter in London.
Over the course of the 90 minutes, the Hammers had 61% of the possession, took 17 shots of which six were on target, and earned five corners.
Visitors West Brom had just 39% of the possession, took seven shots of which three were on target, and earned two corners.
West Brom are 13th in the Premier League table at the moment with 18 points from 14 matches, eight points above the relegation zone.