A lot has happened in the F1 world since the circuit ran the Hungarian Grand Prix last month in Budapest.

On Monday, Renault was cleared to race at Valencia after the International Automobile Federation (FIA) Court of Appeal overturned the team's one-race suspension.

F1 race stewards banned Renault from competing in the European GP after the French team allowed driver Fernando Alonso to leave the pits with a wheel not properly secured during the Hungarian GP. F1's governing body found Renault to be negligent in failing to secure the wheel, as well as letting Alonso to leave the pits when they were aware of the problem and then failing to communicate to their driver the problem.

The FIA reduced Renault's punishment by issuing a reprimand and imposing a $50,000 fine.

Alonso, a native of Oviedo, Spain, will now be able to compete in front of his home crowd.

"It's a home race for me, and I know that there will be amazing support from the fans, and I really want to reward them with a good result," Alonso said.

After Renault had their suspension upheld, the team announced test driver Romain Grosjean will replace Nelson Piquet, starting at Valencia. Piquet was released from the team earlier this month.

"[Valencia] is not the easiest place to make your debut, but I've always liked street races and enjoy the atmosphere of being in the middle of a city," Grosjean said.

Felipe Massa continues to recover from head injuries he suffered during a high-speed crash in qualifying for the Hungarian GP. Ferrari team principle Stefano Domenicali visited the Brazilian driver at his home in Sao Paulo earlier this week.

"Felipe is in excellent form and his recovery is going very well," Domenicali said on Ferrari's official website.

No date has been set for Massa's return to competition, but he is hopeful to be back in the car in October for his home grand prix in Brazil. Ferrari test driver Luca Badoer will substitute for Massa in the European GP.

"I am very motivated to make the most of this opportunity, even if I know I am facing a tough challenge, especially during the first couple of days in Valencia," Badoer said. "It will effectively be a test session for me, but I will be trying my best to secure a good result."

Michael Schumacher was originally scheduled to fill-in for Massa until his full recovery, but Schumacher, a seven-time F1 champion, decided against making a comeback with Ferrari after neck injuries he sustained in a motorcycle accident earlier this year prevented him from returning to the sport he once dominated.

Schumacher drove for Ferrari from 1996 until his retirement in 2006.

Massa won last year's European GP. He led from the pole to the checkered flag, only relinquishing the top spot when he pitted. Massa finished nearly six seconds ahead of Lewis Hamilton for his fourth win of the season.

Hamilton is coming off a victory in the Hungarian GP. After enduring a rough first-half of the season, the defending world champion gave his McLaren team a huge boost with its struggling MP4-24 car.

"It's great to be getting back to business after the four-week break," Hamilton said. "I'm still buzzing from the win in Hungary, and I'm hopeful of being able to carry that pace into the Valencia weekend - particularly with our new upgrades to the car."