Kingston College’s ace sprinter Jhevaughn Matherson highlighted yesterday’s opening day of the 2016 Carifta Trials with a National Youth record of 10.25 seconds to capture the Under-18 100 metres.Matherson, who had only competed in one 100m race before yesterday, crossed the finish line ahead of Calabar High’s Dejour Russell, who raced to a personal best 10.39, with Greater Portmore’s Odaine McPherson placing third in 10.64.Matherson’s winning time erased the 10.27 mark which was held jointly by Jahzeel Murphy and Raheem Chambers.St Elizabeth Technical’s Nigel Ellis captured the Under-20 100m in 10.26, defeating St Jago High’s Raheem Chambers. Chambers (10.32) led for 90 metres before Ellis rallied for the win. Calabar’s Xavier Angus was third in 10.51.DOMINANCEHelped by a 2.5 metres per second wind, St Jago’s Kimone Shaw continued her dominance at this level. She won the Under-17 100m in 11.51 ahead of Michae Harriott of Holmwood Technical, 11.93, and Mount Alvernia High’s Kemba Nelson, 11.94.Patrice Moodie of Edwin Allen High powered to an impressive 11.56 victory in the girls’ Under-20 100 metres final. St Jago’s Shanice Reid (11.79) was second and Camperdown’s Ruchelle Burton third in 11.80.There were also outstanding performances in the 400 metres hurdles, led by Edwin Allen High’s Shannon Kallawan in the Under-20 girls’ event. Kallawan romped to an impressive personal best 56.80 seconds, getting the better of Holmwood’s Nicolee Foster, who clocked a personal best 58.40.In the Under-18 hurdles, Vere Technical’s Sanique Walker won in a personal best 58.68. Hydel High’s Shian Salmon was second in 59.37.Jauvaney James of St Elizabeth Technical took the boys’ Under-20 400m hurdles in 51.67, edging out St Jago’s Timor Barrett (51.68). Kingston College’s Sherwayne Allen took third in a personal best 52.56.In the Under-18 400m hurdles, St Elizabeth athletes were first and second. Leonardo Ledgister, 53.26, won ahead of Dashinelle Dyer, 54.30.Other resultsBOYSUnder-18 shot put: 1. Rasheeda Downer (KC) 18.81m, 2. Zico Campbell 17.60m, 3. Danree Delancy (Munro) 17.71m.Under-18 high jump: 1. Jon Marc (KC) 2.03m, 2. Kobe Jordan (Cornwall) 2.03m, 3. Andrew Betton (Calabar) 1.95m.GIRLSUnder-20 triple jump: 1. Tisanne Hickling (St Jago) 12.82, 2. Danielle Spence (Wolmer’s) 12.24m, 3. Britny Kerr (Hydel) 12.15m.Under-18 triple jump: 1. Myesha Nott (Rusea’s) 11.89m, 2. Lotavia Brown (Edwin Allen) 11.75m.Under-20 javelin: 1. Sahjay Stevens (STETHS) 44.18m, 2. Tyfah Saunders (Immaculate) 41.53m, 3. Georgette Samuels (STETHS) 38.75m.Under-18 javelin: 1. Aiko Jones (Wolmer’s) 40.58m, 2. Zinedine Russell (Alpha) 31.00m.Action on today’s second and final day will begin at 10.30 a.m.