Courtesy of Glynis Walsh; Kevork Djansezian/Stringer/Getty Images
- Alex Walsh, 22, and her sister, Gretchen Walsh, 21, are swimming for Team USA at the Olympics.
- They told BI their "sisterly rivalry" in the pool would spill over into their family dinners.
- "Maturing has made us both realize that the other one's success is not failure," Alex said.
It's one thing to compare yourself to strangers — it's something entirely different when your biggest competition is under the same roof.