Welsh rugby has been dealt a significant blow as fly-half Sam Costelow is set to miss the remainder of the club season following ankle surgery. The Scarlets playmaker now faces a tight race against the clock to be fit for Wales' crucial summer Nations Championship campaign.

The injury occurred during Wales' narrow Six Nations defeat to Scotland in February, where Costelow had been recalled to the starting lineup and was putting in an impressive performance before being forced off. The setback caused him to miss the final two rounds of the tournament, with Dan Edwards stepping in.

This development rules the 25-year-old out of the Scarlets' final four United Rugby Championship (URC) matches, ending his domestic season prematurely. All focus now shifts to his rehabilitation timeline, with Wales' summer schedule looming large.

Head coach Steve Tandy will be anxiously monitoring Costelow's progress, as Wales are set for a demanding summer. Their campaign kicks off with an uncapped match against the Barbarians at Twickenham on June 27th, followed by the Nations Championship opener against Fiji in Cardiff on July 4th. A challenging two-test tour to Argentina and South Africa concludes the July window.

In further concerning news for Wales, hooker Dewi Lake is also ruled out for the rest of the club season and is considered a doubt for the summer internationals, adding to the squad's injury concerns ahead of a pivotal period.