Senzel elected free agency Wednesday, James Fegan of SoxMachine.com reports.
Senzel cleared waivers after being removed from the White Sox's 40-man roster earlier this week and has opted to hit the open market rather than accepting an outright assignment. The 29-year-old has slashed only .195/.283/.331 over 74 games this season between the Nationals and White Sox.
The White Sox designated Senzel for assignment Monday.
Senzel signed with the White Sox in mid-July after being released by the Nationals, but he went just 3-for-30 in 10 games for Chicago and had been playing sparingly of late. The 29-year-old will likely clear waivers just as he did last month.
Senzel is out of the lineup for Wednesday's game against the Athletics.
Senzel looked as though he might move into a more prominent role for the White Sox in the aftermath of last Tuesday's trade deadline, but he's started in only four of the ensuing eight games since the deadline. Though Paul DeJong is now out of the White Sox's infield mix, the club has prioritized Lenyn Sosa over Senzel for the open spot in the infield. Senzel hasn't helped his case for earning playing time by going 3-for-27 with seven strikeouts since signing with the White Sox over the All-Star break.
