rounder Ryan McLaren took 5-19 Wednesday to spur South Africa to a 13-run victory over West Indies in the opening Twenty20 international at the Sir Vivian Richards Stadium. West Indies, chasing South Africa's modest 136-7 off 20 overs, was undone by the 27-year-old McLaren and slumped to 123 all out of 19.5 overs. Jacques Kallis' 53 off 45 deliveries was the backbone of the Proteas' challenging total on a two-paced pitch. Captain Graeme Smith contributed a crucial 37 off 31 balls and shared a fine second-wicket stand of 73. The home team's chase was quickly undermined by McLaren, who removed both openers Chris Gayle and Andre Fletcher. Fletcher edged to wicketkeeper A.B. de Villiers while Gayle, after hitting two fours, swatted a pull to long-on at 28-2. Dwayne Bravo (20) and Ramnaresh Sarwan (13) added 20 for the third wicket before another slump. Off-spinner Johan Botha (2-19) dismissed Bravo to a catch in the deep and added the scalp of Narsingh Deonarine, stumped off a legside wide. It was 52-5 when Sarwan chipped Roelof van der Merwe off the leading edge to extra cover. Kieron Pollard (27 off 17 balls) threatened briefly to take the game away from the South Africans but once McLaren returned to rock his leg stump with a yorker, the victory was assured. McLaren added the wickets of Darren Sammy and Sulieman Benn to become only the fourth bowler to take five wickets in a Twenty20 international. Earlier, the 34-year-old Kallis struck three sixes and one four in his innings-moulding knock. The West Indies struck early after Chris Gayle won the toss and inserted the Proteas. Loots Bosman was caught down the leg side by wicket-keeper Andre Fletcher off Jerome Taylor although umpire Clyde Duncan was in the process of signaling wide when the batsman walked. Smith and Kallis anchored the innings after that before a late collapse. Pollard took 2-22 while pace ace Kemar Roach grabbed 2-25 for the West Indies. Bangladesh collapses Bangladesh's preparations for next week's first Test at Lord's suffered a blow when it collapsed against England Lions at Derby Wednesday. The tourists, playing their final tour match before the Lord's clash with England, slipped from 109 for one to be bowled out for 220 on the first day, with Steve Kirby taking three wickets in 18 balls for the Lions. Ravi Bopara returned from England's Twenty20 World Cup triumph to run through the Bangladesh tail, finishing with three for nine, but he made only 12 with the bat as the Lions reached 125 for three at the close. Bangladesh had batted well after it was put in against a Lions attack which struggled for the right length, but the innings was undermined by some rash shots. The tourists were in deep trouble at 158 for seven after Abdur Razzak edged Woakes to first slip but Mahmudullah responded by hooking Plunkett for two consecutive sixes before he pulled Bopara to Monty Panesar at fine leg.