Multiple Olympic champion Usain Bolt has made "significant strides" as he bids to defend his world titles this season, and is unconcerned about the challenge of sprinter Justin Gatlin.
American Gatlin dominated last year's Diamond League, running 9.77 seconds and 19.68 secs in the 100m and 200m.
Coach Glen Mills said Bolt had stepped up his preparations since running 46.37 seconds over 400m in Kingston in March.
"Usain's made significant strides since the last time you saw him," he said.
Gatlin, 33, won 100m Olympic gold in 2004 and World Championship gold in 2005.
"We take all competitors with a level of seriousness," added Mills. "But the truth of the matter is Usain at his best doesn't have much to worry about."
Bolt, 28, ran only three races last year. He is next due to run in a 100m race at an athletics meet in Rio on 19 April, and will follow that by representing Jamaica in the World Relay Championships in Bahamas on 2 and 3 May.
"I want to run really fast this season so I'm working on it," he said.
"I'm happy with where I'm at. I'm doing a lot of work leading up to this first run in Brazil [in April] - that's the focus and that's what we're working towards."
Bolt will bid for a third 100m gold and a fourth 200m gold in succession at August's World Championships in Beijing.
Sergey Bubka has launched his manifesto for election to the International Association of Athletics Federations presidency, pledging to provide the most thorough athletics review ever.
Teenager Amber Thomson continued to represent T&T with success, with her latest achievement recorded at the Winter Equestrian Festival held at the Palm Beach International Equestrian Center in Wellington, Florida, last month, where she was awarded several prestigious ribbons.
AMBER THOMPSON again flew the Trinidad and Tobago flag with distinction in the United States during the recently-held Winter Equestrian Festival events at the Palm Beach International Equestrian Centre in Wellington, Florida.
{jcomments off}Soon after competing at the Hong Kong Sevens qualifiers last month, and graced with a full strength team, Guyana’s rugby team arrived in T&T confident and ready to move into its second successive Nacra Championship final, with an easy win over the host team in sight.
T&T’s chances of claiming a first ever Caribbean Netball Association Jean Pierre Youth (Under-16) Championship title suffered a heavy setback after they fell to a 0-3 mark in Castries, St Lucia, yeterday. Following a 17-234 loss in its tournament opener on Saturday night, the Jayde Montoute-captained squad then suffered losses to St Vincent and The Grenadines, 14-21 on Sunday night, and in yesterday’s first session, at the Vigie Multi-Purpose Sports Complex, they went under to Dominica, 18-21.