Here's how you can catch both players live in action come kickoff:
Mihailović, U.S. Under-23s vs. The Netherlands Under-23s, 11 a.m. CT | Live Stream
Following a 2-0 defeat to Egypt's U-23s on Friday, Mihailović and his American counterparts will play their second and final friendly match from training camp in Spain against the Netherlands on Sunday morning local time. Mihailović started and played the first 45 minutes for the U.S. during Friday's match, and will be looking to put in another lively shift should he be included among new head coach Jason Kreis' squad at the Pinatar Arena in San Pedro del Pinatar, Spain.
Watch the match live via YouTube (stream above) at 11 a.m. CT.
Frankowski, Poland vs. Latvia, 2:45 p.m. CT | ESPN3
Frankowski entered Poland's 1-0 win against Austria as a halftime substitution on Thursday, and patrolled the right wing for 45 minutes in his side's successful start to UEFA Euro 2020 qualifying. Trailing Macedonia only on goal differential in qualifying Group G, the Polish squad will hope to claim another three points from last-place Latvia at the National Stadium in Warsaw, Poland.
Tune into kickoff live on ESPN3 at 2:45 p.m. CT.