NASCAR driver Tony Stewart speaks at a press conference prior to practice for the NASCAR New Hampshire 300  Sprint Cup Series Camping World RV Sales 301 auto race at the New Hampshire Motor Speedway in Loudon, N.H., Friday, July 12, 2013, (AP Photo/Cheryl Senter)

Tony Stewart is proving that that things we love might not always be good for us. After a big tumble across an Ontario short track, the driver of the number 14 car and co-owner of Stewart-Haas Racing had another incident, this time at a half-mile dirt track in Oskaloosa, IA. And unlike that last crash, Stewart sustained some pretty bad injuries.

Stewart broke both the tibia and fibula in his right leg, although the severity of the breaks weren't mentioned. According to a report from NASCAR, which cites The Des Moines Register, Stewart was alert and talking when he was pulled from the car, but was rushed into surgery on arrival at a local hospital. The report doesn't mention any additional injuries to the other three drivers involved.

Stewart was in the lead of the Front Row Challenge on Monday night, a winged sprint car race, taking place about an hour east of Des Moines. A backmarker lost control and ended up tangling with the three front runners near the end of the race. The incident has a healthy dose of irony following comments Stewart made to NASCAR after last week's crash, "You guys (in the media) need to watch more sprint car videos and stuff. It's starting to get annoying this week about that. That was just an average sprint car wreck. When they wreck, they get upside down like that. That was not a big deal." This one was apparently a much bigger deal.

With a broken right leg, Stewart won't be racing at this weekend's Sprint Cup race at Watkins Glen. It's unclear who Stewart-Haas Racing will field as a replacement and how long the three-time champion will be out.