The summer signings were hard at work during practice with the Baggies.
Indeed, the Baggies open their league campaign on Monday night against Manchester City - far from the easiest of openers for any top-flight team.
But West Brom will have home advantage, which is always crucial for a Tony Pulis side. Could there be a shock at the Hawthorns if the Midlands side are at their most effective and organised?
There will be a lot of emphasis on Lambert and Chester, of course, and not just on Monday night. Striker Lambert joined from Liverpool recently for a £3 million fee, valuation as reported by the Daily Mail, and scored twice on his debut within hours of signing.
Chester, meanwhile, collected a whopping £8 million, according to BBC Sport, a valuation that will no doubt put pressure on the West Brom signing to deliver ahead of the new campaign. It's a good thing they've been training hard, then, as the duo face a big season at the Hawthorns this term.