Spencer Ekola extended his season-long winning streak to 21 matches but Bishop Diego fell to Nordhoff 12-6 on Thursday.
Ekola swept his sets in dominating fashion, 6-0, 6-0, 6-0.
The Cardinals’ top doubles team of Cameron Roberts and Jake Stratford-Jones claimed 2 of 3 sets.
Bishop Diego (4-4, 2-1) is off for Spring Break and plays again on April 14.
