Briefs 2-Portugal's Petit to quit internationals after Euro 2008

May 22 (Reuters) - Sports news in brief from around the world:

Soccer - Benfica's 31-year-old midfielder Armando Petit plans to retire from internationals after Euro 2008, having played at two World Cups and Euro 2004.

"This is probaly my last European (championship) and I will say goodbye to the Portugal team," Petit, who has 53 caps, told reporters at a training camp in Viseu, 300 km from Lisbon.

Euro 2008 runs from June 7-29 in Austria and Switzerland.

Soccer - Sampdoria have extended coach Walter Mazzarri's contract by a year to 2010 after he led them to a sixth-place finish in Serie A and UEFA Cup qualification.

"I'm happy and I thank the club, the president and the fans. I will work with enthusiasm to take these colours even higher," Mazzarri told a news conference.