Talk about an Indiana Fever -- Caitlin Clark battled an illness during Thursday night's game against the Atlanta Dream ... and it was so rough, the WNBA superstar had to leave the court to vomit amid the action. The moment went down as both teams were gearing up for the second half of the Commissioner's Cup matchup at the Gainbridge Fieldhouse ... when all of a sudden, Clark jetted to the nearest trash can to blow chunks. Clark told reporters she was under the weather and tried to eat some