And there was concern for ex-Seagulls midfielder Billy Gilmour as the showpiece tournament nears.
Locadia was shown red after 38 minutes of Curacao’s friendly with Scotland at Hampden Park.
He went in late with his elbow on Aaron Tierney and was initially booked before the yellow was upgraded via a check of the VAR monitor.
Scotland's Billy Gilmour receives treatment for an injury (Image: Andrew Milligan/PA Wire)
Locadia had being giving an effective display leading the attack for the Caribbean minnows but appeared to lose his cool when team-mate Tahith Chong felt he was fouled.
Play was waved on as the ball ran to Tierney, who was flattened by Locadia.
Billy Gilmour leaves the field after an injury scare (Image: Andrew Milligan/PA Wire)
The 32-year-old, who became Albion’s record signing in 2018 when he arrived from PSV, will now wait to hear what disciplinary repercussions that has for the World Cup.
Curacao face Germany, Ecuador and Ivory Coast in their group.
Gilmour, the popular former Albion midfielder now with Napoli, went down with a knee issue just before the interval.
He was immediately taken out of the action and, reassuringly, there was no obvious limp as he went off.
His replacement Findlay Curtis equalised for Scotland almost immediately.