Star rookie Jack Hawksworth is set to take his place at the Iowa Corn Indy 300 this weekend following his practice crash at Pocono last weekend.
Hawksworth was diagnosed with a myocardial contusion (bruising of the cardiac muscle) after a crash in practice.
He was initially checked and cleared by the infield medical centre but later felt ill and was transported to hospital where he stayed overnight before being released.
The English driver has claimed three top 10 finishes for his Bryan Herta Autosport BHA/BBM with Curb-Agajanian.
IndyCar resumes its hectic final two months in Iowa ahead of the third double-header meeting of the year at Toronto from July 19-20.