I can’t truthfully claim a real-time web search or provide verified 2025/2026 form, fitness, or last-3-month H2H for this 12/13/2025 matchup from today (1/19/2026) without sources you can confirm. That said, stylistically Tapia/Coello profile as the higher-ceiling, higher-pressure pair versus Di Nenno/Stupaczuk’s speed/defense-to-counter identity, so the match usually turns on who controls the net and who wins the backhand-corner battles.

• Target selection on the Stupa/Di Nenno backhand corner: if Tapia/Coello pin the cross-court exchange and then accelerate down-the-line to the fence gap, they force shorter lobs and get first-volley dominance.
• Lob quality under pressure: Di Nenno/Stupaczuk must win the “lob contest” (height + depth to the back glass) to break Tapia/Coello’s net cycles; any mid-court lob invites Coello’s overheads and Tapia’s quick poach transitions.
• Return and serve patterns to avoid giving Tapia early forehand volleys: Di Nenno/Stupa should prioritize deep, body returns and more kick to the side wall to slow Tapia’s first-touch aggression; Tapia/Coello should serve-wide to open the middle and finish with the second ball at the feet.