Fabio Aru (ITA/Astana) just dropped race leader Tom Dumoulin (NLD/Giant-Alpecin) (who was just 6 seconds ahead in the GC) and tries to put as much tim was he can into his overall competitor.
The 2015 Vuelta is thereby decided exactly here in favour of Aru.
Nairo Quintana (COL/Movistar) & Rafal Majka (POL/Tinkoff-Saxo) are on hi tail to improve their overall ranking as wel.
stage 20: San Lorenzo de el Escorial - Cercedilla (176km)
2015 Vuelta à Espana