Luyendyk Jr bruised after testing smash.

On Tuesday afternoon, Infiniti Pro Series driver Arie Luyendyk Jr escaped with bruising after a high speed testing crash at the Gateway International Raceway in St Louis in what has been a dark, yet lucky week for the Indy Racing League and its subsidiary Pro Series Championship.

Luyendyk Jr, who races for his family owned team in the Infiniti Pro Series, was taken to St Louis University hospital with pains in his left shoulder and right heal but all X-rays proved negative and he was soon released.

The 20 year-old son of double Indianapolis 500 winner Arie Luyendyk, was testing for the Gateway 100, scheduled for Aug. 25, when his No. 5 Luyendyk Racing Dallara-Infiniti hit the wall exiting Turn 2 at the 1.25-mile oval at approximately 8:45 a.m. local time

Luyendyk Jr became the fifth IRL/IPS driver/team member to visit a hospital in three days following three separate incidents at the Kentucky Speedway last weekend.

Luyendyk's IPS rival, Jason Priestley is still listed in a 'Guarded condition' at Methodist hospital in Indianapolis after fracturing his T8 vertebrae in a practice crash prior to the Kentucky Indy 100 IPS event.

Richie Hearn is recovering after an operation on a fractured right foot while Kelley Racing left rear-tyre changer Bernie Hallisky is listed in good condition at Methodist after suffering multiple broken bones in an accident on pit road. Rusty Hurford, the second Kelley Racing crewmember injured when Tony Renna's car slid into its pit stall, was released from a Kentucky hospital on Sunday with a minor neck wound.

Thankfully all are expected to make a full recovery in time but there will undoubtedly be an extra special emphasis on safety during this week's open test at Gateway and the upcoming Gateway Indy 250.