New Zealand openers Martin Guptill and Colin Munro comfortably steered their side to an impressive 10-wicket victory over Sri Lanka in their World Cup opener at the Sophia Gardens in Cardiff on Saturday.Guptill and Munro remained unbeaten on 73 and 58, respectively, as the Kiwis raced past the 137-run target set by Sri Lanka in just 16.1 overs.New Zealand got off to a decent start as Guptill and Munro added 26 runs in the first five overs. The two openers didn't let the Lankan bowlers make any inroads as they kept the scorers busy, adding 77 runs in the first 10 overs.Both Guptill and Munro notched up their respective half-centuries in the 14th over before helping New Zealand script a comfortable win by reaching the target in the 17th over.Earlier, the grass cover on the pitch was incentive enough for New Zealand skipper Kane Williamson to put Sri Lanka in after winning the toss.And his bowlers didn’t disappoint as they bundled out the Lankans for just 136 in 29.2 overs with Matt Henry (3/29) and Lockie Ferguson (3/22) inflicting the maximum damage.Sri Lanka skipper Dimuth Karunaratne (52*, 84 balls) waged a lone battle as he carried his bat through the innings while the movement off the pitch proved too much for the other batsmen from the Island Nation.While a couple of partnerships ensured that Sri Lanka crossed the three-figure mark, constant soft dismissals helped the Kiwis have a field day with the ball.Angelo Mathews was the biggest disappointment as the senior pro failed to slog it out and ended up giving Tom Latham a regulation catch off Grandhomme.Brief Scores: New Zealand: 137/0 in 16.1 overs (Martin Guptill 73 not out, Colin Munro 58 not out) beat Sri Lanka 136 all out in 29.2 overs (Dimuth Karunaratne 52 not out, Kusal Perera 29; Lockie Ferguson 3/22, Matt Henry 3/29) by 10 wickets.(With inputs from IANS) We'll get through this! Meanwhile, here's all you need to know about the Coronavirus outbreak to keep yourself safe, informed, and updated. The Quint is now available on Telegram & WhatsApp too, Click here to join.