Estrada will be the Giants' primary second baseman to begin the year, Andrew Baggarly of The Athletic reports.
Tommy La Stella (Achilles) was placed on the 10-day injured list Thursday, so Estrada will get a chance to start regularly early on. In 52 games last season, Estrada slashed .273/.333/.479 with seven home runs, 22 RBI, 19 runs scored and a stolen base. If he hits well, he could carve out a larger role even once La Stella is healthy.