Greg Olsen said via Twitter Thursday night that his son's surgery was a success.
“After a full day of surgery our TJ is resting comfortably in the cardio intensive care unit. Surgery a success. 1st step of a long road,” Olsen posted on Twitter shortly before 8 p.m. Thursday.
T.J. was diagnosed with a heart defect, known as hypoplatic left heart syndrome, when he was 18 weeks old in utero. About one to four babies in 1,000 are diagnosed with the condition.
T.J. will have two more major surgeries before he turns 3.
T.J. and his twin sister Talbot were born via Caesarian section on Tuesday. T.J. was immediately put into the care of doctors.
“Thank [you] all for the amazing support and prayers for my family,” Olsen tweeted. “You have helped us [through] this nightmare. Our boy is a fighter.”
Olsen plays tight end for the Carolina Panthers of the National Football League. He is the son of Wayne Hills football coach Chris Olsen.