Jamie Overton, the Somerset fast bowler, turned Hampshire’s day on its head with a devastating five wicket haul on the first day at the Ageas Bowl.
Overton ended with season best figures of five for 42 as he tore through the Hampshire middle order, after Jimmy Adams’ fifty had given them the perfect start.
Somerset continued their assault on the game by reaching the close 66 for one – with Marcus Trescothick and Johann Myburgh sensibly seeing out the day.
Hampshire, after winning the toss and batting first, got off to a fine start with their highest first wicket partnership of the season.
Captain Will Smith elevated himself to the top of the order and put on 89 with Adams – in a chanceless stand in which the pair classily drove straight down the ground.
Smith was the only casualty of a positive morning when he edged to second slip for 32.
Even the second wicket stand between Adams, who had passed fifty in 85-balls brought up with a delicious cut shot, added 48 runs as danger looked a long way away.
But the 28th over provided an alteration in fortunes for the visitors as Overton, along with Jim Allenby, sprung into life.
Alsop was leg before to Australian Allenby, before the former Glamorgan all-rounder bowled Liam Dawson.
Overton got his first thanks mainly to a good mid-wicket catch by Chris Rogers, a ball which left Michael Carberry’s bat and never seemed to get more than a few centimetres off the grass.
Sean Ervine and Lewis McManus continued the procession – the former edging behind before wicketkeeper McManus had his middle stump pointing towards fine leg.
Tail Gareth Berg and Mason Crane did not hang around either as Overton, who is in the England performance squad this summer, completed his first five-for of the season – and second in his career. Both wickets leg before.
At that stage Hampshire had lost six wickets for 11 runs to dramatically collapse, admittedly with the ball swinging.
Tino Best and Ryan McLaren temporarily paused the wicket flow with a 24 run partnership, the first pair to get to grips with the conditions.
But that was short lived as Jamie’s brother Craig Overton found Best skying to Rogers at mid-on.
The hosts had been bowled out for 219, after collapsed from 166 for two soon after lunch.
Somerset’s reply started poorly as Rogers chased a ball down his legs to McManus.
Best attempted to bowl at his ferocious speed but could not find the wicket he wanted, despite a close leg before shout to Trescothick – soon after he was warned by the umpire for his follow through.
Former England international Trescothick reached close on 33 with Myburgh 29, the duo watchfully playing out the day to trail by 153 runs.
After the match Jamie Overton said: “It is up there with the best days of my career this far. It is only my second five-for so I am pretty happy with how things have gone. We never thought we would bowl them out for 219 after they were 140 for one. It was just one of whose things when the ball got soft and out of shape so we changed it and it started to swing for some reason, I couldn’t tell you why, but it is just one of those things. We put the balls in the right areas and fortunately for me it worked out today.
“I have worked hard over the winter and if you can keep your lines and discipline you will get more wickets. I have learnt the hard way about bowling short but I have worked out what to do now and I am in a better place.
“Hopefully we can push on score some runs and be back out bowling again tomorrow evening.”