Yorkshire innings - 210-4 After a terrible start at 18-3, Lauren Winfield-Hill and Sterre Kalis rescued Yorkshire with a record 4th-wicket stand. Lauren Winfield-Hill (c/wk): 99 off 55 balls - a career best. Fell 1 run short of a century. Sterre Kalis: 86_ off 50 ballsThe pair shared 167 for the 4th wicket, a joint world record for that wicket. Captain Winfield-Hill hit a career best 99 off 55 balls and Netherlands star Kalis 84 not out off 50 as Yorkshire totalled 210 for 4, the highest total by any team in this year's Blast. Somerset started their chase well, but their task was too tall. Australian overseas Anika Learoyd top-scored with a superb career-best 103 not out off 49 balls including four sixes. But England legspinner Sarah Glenn impressed for Yorkshire with 2 for 30 in Somerset's 199 for 5. This fourth defeat in nine games dents Somerset's Finals Day ambitions. Yorkshire had lost seven of their previous eight. In February just gone, UAE pair Esha Oza and Heena Hotchandani also shared 167 for the fourth wicket against Nepal in Bangkok. Erin Thomas top-edged a skied return catch to Alex Griffiths six balls into a contest played on a batter's dream surface. Maddie Russell then had Ami Campbell caught at cover and Jess Jonassen at point, with Yorkshire - who had been 18 for 3 - reaching the end of the powerplay at 42 for 3. This was Yorkshire’s first win in 9 attempts in this year’s Vitality Blast. They had 7 defeats and 1 No Result before this. Somerset won the toss and elected to bowl. Winfield-Hill and Kalis took Yorkshire from crisis to a match-winning 210, and the bowlers did enough to defend it against Learoyd’s onslaught. Odgers made it to 39 before being trapped lbw by Glenn with the score on 81 in the ninth over. Learoyd played nicely and pulled Woolston for six over midwicket en-route to her 27-ball fifty, by which time Somerset were 129 for 2 after 13, needing 82 more. Glenn bowled a brilliant 15th over, conceding only three and bowling Holland. And at 140 for 3, despite Learoyd's presence on 57, it felt key. So it proved, Somerset even retired Griffiths out on 3 before Learoyd reached her century off 48 balls as Jonassen defended 32 off the last over.