SHOAIB Akhtar is facing a race for fitness ahead of Worcestershire's County Championship clash against Yorkshire tomorrow.

The Pakistani fast bowler limped out of yesterday's Twenty20 victory over Glamorgan at New Road with a slight calf strain.

Shoaib, 29, managed to bowl two overs before a slip in the field forced his abrupt exit.

Despite losing the overseas star just five overs into Glamorgan's reply to Worcestershire's 223-9, in which Ben Smith hammered a 42-ball century, the Royals swept to victory by 37 runs.

Shoaib will receive treatment on his calf throughout the day and a decision on his selection will be made tomorrow.

"We just don't know if he's going to be fit," said Newton. "Shoaib's going to have treatment all day. A decision will be made tomorrow morning.

"We will have to see how he feels when he wakes up tomorrow after the treatment. It's whether he will be feeling 100 per cent or not.

"It's not a serious injury, just a slight strain on his calf. He is the type of bow-ler that picks up little niggles like this. It is part and parcel for him.

"He's a performer who plays at the very highest level and so any little tweak makes a big difference to him.

"Shoaib will pick up the odd tweak here and there this season. It's something we always knew could happen.

"But we still have Kabir (Ali) available for Yorkshire tomorrow and Matt Mason is OK to play, so we have the bowlers."

Smith's 45-ball 105 proved the inspiration behind yesterday's triumph against the Dragons, although it was not enough to send Worcestershire into the knock-out stages of the Twenty20 Cup competition.

The former County skipper cracked six sixes and 12 fours to register his highest score in the format.

Smith was delighted with his effort and now believes Worcestershire must look for a repeat performance against the White Rose county.

Smith said: "There was a little bit of lady luck involved as well, but I made the right decisions, took the right options and it came off.

"It's now an important game against Yorkshire. We must get back to winning ways.

"Apart from that blip at Leicestershire, where we really outplayed them for three days and then lost the game just on one session, we've had a really good season in that competition."