Lowrie still ranks last among American League shortstops with a 3.31 range factor, but the A's have seen an improvement in this area. He averaged a 2.88 range factor in his previous seven seasons.
"I would say definitely an improvement," said manager Bob Melvin. "I would say, within the last three weeks or so, he's been the best that we've seen defensively.
"It seems like his range is better, he's certainly making some stronger throws from the hole at shortstop. It's a credit to him and his hard work, because he does take his defense very seriously, and he works at it every day. It's starting to pay dividends for him."
At the plate, Lowrie is just 7-for-37 over his last 12 games.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.