Prediction (no JavaScript):

Olimpia come into this with a perfect league record of nine wins and three draws, and their home numbers are especially tidy: four wins and two draws with only four goals conceded. They have also gone three league matches without conceding and, more broadly, have not lost in 13 straight across the competition, which is exactly the kind of base that leans toward a clean sheet bet.

CS 2 de Mayo have been harder to trust in front of goal, with just nine league goals from 12 matches and only one goal in each of their last two league outings. Their away return is respectable enough, but the bigger picture still points to a side that has failed to score in several of the more difficult fixtures, including the 0-2 defeat to Libertad and the 0-0 draw at CS Cristal in qualification.

The head-to-head also gives the clean-sheet angle some support. In the last five meetings, both teams have scored only once in a 1-1 draw, while the others stayed at 3-3, 3-2, 2-1 and 0-0 scorelines; that is not a flawless BTTS-No trail, but it does show that Olimpia have been capable of shutting CS 2 de Mayo out, especially in tighter meetings.

There is a small tension here because the recent head-to-heads have not been uniformly low-scoring for Olimpia, and CS 2 de Mayo did find a goal in their latest draw at Guaraní. Even so, Olimpia’s home defence, their three-match league run without conceding, and CS 2 de Mayo’s modest scoring return away from home all point more toward one side being blanked than both nets bulging.

My prediction is BTTS - No at 67/100. Olimpia have kept three straight league clean sheets, they have conceded only four goals in six home league matches, and CS 2 de Mayo have scored just nine times in 12 league games. The head-to-head also offers some cover, with a 0-0 and a 1-1 among the recent meetings, so I prefer the no-goal-for-both side despite the slight risk from CS 2 de Mayo’s recent away scoring.