Goals from Filip Krovinovic and Dara O'Shea extended West Brom's lead at the Championship's summit as they ended Millwall's run of three consecutive home victories. 

Krovinovic's 43rd-minute strike rounded off a stormy but dominant half for the Baggies whilst O'Shea's flicked header ensured all three points. 

Gary Rowett made two changes to the team that earned a draw at Hillsborough last weekend as he decided to partner Storm Ciara upfront with Matt Smith to allow a three-man midfield of Ryan Woods, Shaun Williams, and Jayson Molumby. 

The blusterous conditions were clearly embraced by the Millwall players as the vast majority of them opted to wear short sleeves for the occasion. 

It was the West Brom players though, all with tightly fitted thermals on, who reaped the advantages of the weather after the ball drifted away from Jake Cooper’s boot in the third minute and into Callum Robinson’s path. 

The on-loan Sheffield United forward played in Matheus Pereira for a one-on-one with Bartosz Bialkowski but the Brazilian’s effort hit the woodwork. 

Having to wrestle the wind, Millwall found themselves camped inside their own half for the opening twenty minutes as West Brom attempted to string a couple of windswept passes together. 

Yet, it was Millwall who forced the first attempt on target after a lung-busting run from Molumby ended in him being chopped down by Jake Livermore.

Many in the stadium were hoping that Jed Wallace would recreate his Boxing Day freekick against Cardiff but Sam Johnstone parried his effort away for a corner. 

It was not long before West Brom reinstated their dominance on the game and deservedly took the lead on the stroke of half-time as the wind paused for a moment. 

Everyone on the pitch drew their breath except for Filip Krovinovic whose curling effort from 22-yards left Bialkowski helpless in Millwall's goal. 

West Brom’s momentum was not halted by the break and they should have been two goals ahead within the opening minute. 

Robinson’s teasing cross beat both Cooper and Hutchinson inside the Millwall penalty area and all Hal Robson-Kanu had to do was tap into an empty net from a yard out but a lapse in concentration saw the ball land on the net’s roof. 

Rowett introduced Jon Dadi Bodvarsson and Connor Mahoney on the hour mark to give the Lions some fresh legs in the final third but both substitutes failed to stop West Brom from controlling the tempo. 

Millwall fans screamed for a penalty as Wallace's freekick struck the hand of a Baggie defender in the wall but referee Gavin Ward waved away any player protests. 

West Brom finally added a second in the 84th minute to allow some to head for the exits early as Dara O'Shea's flicked header at the near post beat Bialkowski. 

Wallace again stung the palms of Johnstone from a freekick in injury time but it was very much too little too late for the Lions. 

Teams: 

Millwall: Bialkowski, M.Wallace, Hutchinson, Cooper, Romeo, Williams (Bradshaw 76), Woods, Molumby, J.Wallace, O’Brien (Mahoney 58), Smith (Bodvarsson 58). 

Subs: Steele, Ferguson, Pearce, Skalak. 

West Brom: Johnstone, Ajayi, Bartley, Townsend, O’Shea, Pereira (Phillips 76), Sawyers, Livermore, Krovinovic, Robinson (Grosicki 65), Robson-Kanu. 

Subs: Bond, Furlong, Austin, Harper, Hegazi.