Four players, two in the 16s and two in the 18s, inked spots in the semifinals on day seven at the USTA Boys’ 18 & 16 National Championships in Kalamazoo on Wednesday. Top-seeded Frances Tiafoe (College Park, Md.) continued his dominance in the 18s singles tournament with a straight-set victory over No. 6 seed and reigning Wimbledon Juniors champion Reilly Opelka (Palm Coast, Fla.) 6-4, 7-6 (3). No. 4 seed and reigning French Open Juniors champion Tommy Paul (Coconut Creek, Fla.) survived a tough challenge from No. 7 Alex Rybakov (Coral Springs, Fla.), winning the match in three sets by scores of 6-3, 6-7 (3), 6-1. The two other quarterfinal matches, No. 3 Stefan Koslov (Pembroke Pines, Fla.) vs. Eduardo Nava (Woodland Hills, Calif.) and No. 2 Taylor Fritz (Rancho Santa Fe, Calif.) vs. No. 5 Michael Mmoh (Bradenton, Fla.) will begin at 12:30 p.m. and 1 p.m. tomorrow. In the 16s singles draw, top-seeded Jeffrey Wolf (Cincinnati, Ohio) dispatched No. 25 Trent Bryde (Suwanee, Ga.) 6-4, 6-2 in the first quarterfinal while No. 3 Patrick Kypson (Greenville, N.C.) defeated No. 15 William Howells (Boca Raton, Fla.) 6-3, 6-2 to set up a meeting with Wolf in the semifinals. No. 4 Alexandre Rotsaert (Boca Raton, Fla.) vs. No. 5 Sean Sculley (Hilton Head Island, S.C.) and No. 8 Kyrylo Tsygura (North Potomac, Md.) vs. No. 16 Jason Lui (Bellevue, Wash.) will vie for semifinal spots beginning at 11 a.m. tomorrow.

Source: Mitch Blankespoor