Career
He tied for 1st-3rd at Pärnu 1967. He thrice shared 1st in Latvian Chess Championship (1969, 1974, 1985). Petkēvičs played for Latvia in Chess Olympiads:
In 1994, at first reserve board in the 31st Chess Olympiad in Moscow (+1 –1 =4);
In 1996, at second reserve board in the 32nd Chess Olympiad in Yerevan (+4 –1 =2);
In 1998, at first reserve board in the 33rd Chess Olympiad in Elista (+2 –0 =3).
Petkēvičs was awarded the International Master (IM) title in 1980, and the General Motors title in 2002.