McManaman was a constant thorn in Chelsea's side as the two teams played out an entertaining Premier League clash.
The Baggies pushed the reigning champions all the way, but Chelsea edged out the game 3-2 for their first win of the seasons.
Wright hailed the attacking impact of McManaman, who signed for the side back in January from Wigan Athletic.
He said: "He caused them all sorts of problems. He's one of those players I've never seen him have a bad game.
"He's a fantastic signing for West Bromwich Albion."
McManaman played 77 minutes of the fixture, providing an assist and picking up a booking.
Despite only touching the ball 34 times, the fewest of any Baggies midfielder, he created four goalscoring chances - the same as Claudio Yacob, James Morrison, James McClean and Darren Fletcher combined.
McManaman also made one interception, completed three dribbles, and recorded a 95 per cent pass completion rate.
The 24-year-old was Tony Pulis' first as West Brom manager back in January, and if he can continue being as creative as he was at the weekend, he could have a prominent role to play over the course of the season, despite Serge Gnabry's arrival on loan from Arsenal putting his place under pressure.