Gryziecka's first major international medal came at the 1966 European Junior Games, where she was a bronze medalist. She began to make her impact at senior level in the early 1970s, placing runner-up at the national championships in 1970 and 1971 behind Poland's leading thrower of the time, Daniela Jaworska. She reached the top of the global seasonal rankings in the 1971 season with her throw of – a mark just farther than Jaworska, evidence of the Polish dominance of the period.