OWEN SMITH endured a roller-coaster ride of emotions over the weekend.

The Sychdyn-raised 400m ace retained his Welsh Senior Championships title on Friday night in Cardiff, winning the final a day later in 47.32 seconds after qualifying form his heat in 47.34.

Smith was also awarded the best male track performance of the Championships, before the weekend took a turn for the unusual.

The 23-year-old was celebrating his victory with family when he had a call at 10pm asking whether he would be prepared to Great Britain in the World Cup 4x400m relay team because of an injury, which he duly accepted, hoping on a train the next morning.

Smith was set to take the baton out at the Olympic Stadium, but disaster struck as when he got down to the blocks Team GB were withdrawn due to an injury to Cameron Chalmers.

Coach Matt Elias tweeted his delight at Smith accepting the call up, however late, writing: "MASSIVE shout out... this guy ran the Welsh Champs heats Friday night, the final Sat afternoon & then got called up for the GB 4x400 at 10pm last night, hoped on a train to London this morning & will be running tonight at the Athletics World Cup #inspired."

But his delight soon turned to disappointment, Elias following the withdrawal up with: "A reminder to ALL athletes who didn’t want to compete for their country & kit companies who wouldn’t let their athletes compete.... There is some young hungry kid training to take your spot & just get a shot!!! #RememberWhyYouStarted."

Former Deeside athlete Smith will get to run at the Olympic Stadium this weekend in the Diamond League pre-meet 400m.