Mateo went 2-for-3 with a walk, a double, three runs scored and a stolen base in Sunday's extra-inning loss to the Diamondbacks.
Getting the start at shortstop while Mauricio Dubon covered third base for a resting Austin Riley, Mateo made a big impact from the ninth spot in the order. The veteran utility player has been used sparingly so far by Atlanta, but he's making a case for a larger role, going 3-for-7 in four games with a double, a homer, a steal, two RBI and five runs.