The record-breaking England sailor left the field just before the end of Thursday’s game with what was described as a “minor problem”.
The remaining Red Rose players dropped seven catches combined while teenager James Rew took center stage, scoring 105 of Somerset’s 361 all-outs in total. Lancashire ended up conceding 72 goals twice.
Australia star Smith, who hit a reluctant 30 on his Sussex debut in Worcester last week, was back in the pavilion after firing just three balls from 14 when play finally got underway.
Despite his failure, Sussex nonetheless enjoyed a good second day as they went 319 to four after being sent into the batting, with Alsop (118 not out), Cheteshwar Pujara (77) and James Coles (59 nos) leading the way .
Yorkshire forged a superior position against Durham and led the hosts by 118 points at the start of day three.
George Hill picked up four wickets to help Durham win for 227, with Yorkshire scoring 91 for three in the second inning and England pairing Dawid Malan (33 not eliminated) and Jonny Bairstow (16 nos) on goal.
Rory Burns led from the front with a fluid and aggressive 88, while Surrey carved out a solid first-inning lead against Middlesex, trailing just 19 runs on 190 for three stumps.
But the most notable inning of the second day, interrupted by bad weather, was Jamie Smith’s 55er that didn’t fall out, with the 22-year-old producing some memorable and high-class shots.
Nottinghamshire seaman Brett Hutton scored his third five-wicket pull of the season to compound the former county of Northamptonshire’s ongoing batting problems.
Hutton found plenty of movement under floodlights, overcast skies and light rain, sparking a Northamptonshire collapse from 113 for two to 158 for overall.
A fluent stand of 68 in the fourth wicket between Joe Clarke (41 not out) and Matthew Montgomery (34) helped Nottinghamshire close a run deficit to 157 for four.
A buccaneering stand of 70 at the 10th wicket restored Warwickshire’s control after Essex hit back hard at Edgbaston.
Essex finished the second day 86 to four, still 30 points adrift after Warwickshire’s last pair Hassan Ali (53 not eliminated) and Olly Hannon-Dalby (18) hit 70 balls from 69 to take their team to 242.
A well-done 86 from Michael Neser and four wickets from Timm van der Gugten put Glamorgan within reach of their first win of the season against Worcestershire in Cardiff.
With Worcestershire ending the day on 195 for seven, 46 runs clear and just three wickets left, Glamorgan will be hoping to claim victory on Saturday.
Gloucestershire seaman Matt Taylor impressed in his first appearance of the season against Derbyshire with two goals in 10 overs as the hosts struggled in another bad weather day.
No play was possible until 2pm due to a wet outfield and – after Gloucestershire won the toss – Derbyshire reached 130 for five before poor light ended the game prematurely.
Both fans and players were frustrated in Canterbury as only 6.1 overs were possible between Kent and Hampshire and the visitors went to 103 without a loss, an eight lead.