Spots like Khajjar, Kashmir, Auli and more can give Switzerland a run for its money.
The Spaniards will now play the winner of Sunday's round of 16 game between the Netherlands and South Africa.
Switzerland made a winning start to their campaign with a 2-0 victory over debutants Philippines.
Mader, 26, crashed on the descent towards La Punt and fell into a ravine where he was found unresponsive by the race doctor and resuscitated before being air-lifted to hospital.
Sala's plane crashed in the English Channel, killing him as well as the pilot, as the Argentine striker travelled to Cardiff after signing for 17 million euros from the Ligue 1 side in January, 2019.
They will face the Malaysian pair of Ong Yew Sin and Teo Ee Yi in the semifinals.
Prannoy beat All England Open runner-up Shi Yu Qi of China in the opening round.
Ronaldo was benched for Portugal's first knockout game on Tuesday as they beat Switzerland 6-1, with his replacement Goncalo Ramos netting a hat-trick
Portugal will meet Morocco in the quarterfinals on Saturday.
Portugal crushed Switzerland 6-1 in their round-of-16 encounter that started with Cristiano Ronaldo on the bench.