My late step-father played some pro ball in the 1950s, then played and managed semipro for decades after that. Once, when I was breaking in a new glove, he got all nostalgic:
"In baseball, nothing like a good glove that you like." He told the story of this legendary infielder whose glove was so old and floppy, it accidentally got thrown away. "The guy went in the dumpster looking for it... and he found it. Second baseman. Hall of Famer..."
I correctly guessed Mazeroski, then noted he wasn't in Cooperstown (yet). The retort: "Well, he should be!"
I'll take his word for it. He said Maz' hands were so fast and sure on DPs it looked like he barely touched the ball on the transfer. Qualitative data.