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Tyler Robertson, son of Nationals special assistant, acquired off waivers from Twins

Robertson went 2-2 with a 5.54 ERA in 42 appearances for the Twins over the past two seasons, and held left-handed hitters to a .200 batting average. He logged only one inning for the Twins this season. The 6-foot-5 left-hander was drafted by the Twins in the third round out of Bella Vista High in Fair Oaks, Calif. in 2006. He was a starter in the minor leagues until 2011. He posted a 3.05 ERA over 20 2/3 innings for the Twins’ Class AAA affiliate this season.

The Nationals optioned him to Class AAA Syracuse after acquiring him. The reunion of the Robertsons is a unique, and interesting, story. Rizzo hired Robertson in in October 2009, part of the his then-effort to beef up the front office, after eight seasons with the Texas Rangers.

The Nationals have made bolstering their left-handed bullpen depth a priority as Fernando Abad and Ian Krol were called up to the major leagues recently.