Curitiba Predictions & Picks — October 3, 2026

Saturday's Curitiba semifinal pits Gustavo Heide against Pedro Boscardin Dias on clay. Gustavo Heide brings a 4-match winning streak into this one, 8-2 across the last ten. Pedro Boscardin Dias is rolling — 3 straight wins, 6 of 10 in recent play.

The serve is where this match separates: Heide has been winning 71.6% of first-serve points to Dias's 65.5%, and on clay that gap compounds fast. Heide comes in off a compressed schedule; Dias comes in off a compressed schedule. Anything other than a Heide win would rank among the bigger surprises of the week.

Ivan Justo Guido and Tomas Barrios Vera meet in the semifinal at Curitiba on Saturday. Tomas Barrios Vera is rolling — 3 straight wins, 3 of 10 in recent play. Ivan Justo Guido has won 3 in a row and 6 of the last 10 overall.

Neither the serve numbers nor the ratings separate these two by much, which is why our number stays close to even. Guido comes in off a compressed schedule; Vera comes in off a compressed schedule. Little separates them; Vera gets the nod on the finest of margins.