Worcestershire 367 lead Durham by 170
Mark Wood proved his fitness for the Test series against South Africa by taking five for 54 before rain halted the second day's play in Durham's Specsavers County Championship match at home to Worcestershire.
The paceman took the visitors' final two wickets with the new pink ball, but not before they had established a lead of 170.
Brett D'Oliveira completed his century and Moeen Ali made 58 in Worcestershire's total of 367.
Prior to England one-day duty, Wood took 3 for 206 in two matches for Durham at the start of the season as he felt his way back from ankle surgery.
Looking sharper now, he had already taken three of the wickets when Worcestershire resumed on 213 for four. He completed his haul by knocking out Ed Barnard's off stump with his seventh delivery with the new ball before forcing last man Josh Tongue to fend a catch to short leg.