The Baggies striker took to social media and was praised by the BBC pundit.
Rondon worked hard, showed plenty of heart and, most importantly, scored the goal that won the game for the Baggies.
And the 26-year-old Venezuelan was delighted on Twitter after being voted West Brom's man of the match:
Indeed, Lawro said he was surprised by the West Brom striker due to the fact he ran so much and recorded the most sprints of anyone on the pitch - both Baggies and Manchester United players.
He told the BBC: "That really surprised me because he’s a big lad. He’s found a bit of form and the great thing about him for West Brom is that he gets the team forward with how he plays."
Rondon has come quite far from the awkward-looking striker who was criticised during his first few months at the Hawthorns.
The club-record signing has certainly surpassed West Brom's previous most-expensive buy in Brown Ideye - how bright is the 26-year-old's future?