AFP Sports Agenda for Wednesday, February 17 (all times GMT): + Ronaldo's Juventus meet Porto in Champions League last 16 + Under-fire Dortmund travel to Sevilla + World number one Barty plays in Australian Open quarter-finals + Nadal takes on Tsitsipas in men's last eight + Team parallels at the world ski championships FOOTBALL -- UEFA Champions League last 16, first legs (2000): Porto v Juventus, Sevilla v Borussia Dortmund. Picture (FBL-EUR-C1) -- English Premier League: Burnley v Fulham (1800), Everton v Manchester City (2015). Picture (FBL-ENG-PR) -- Spanish La Liga: Levante v Atletico Madrid (1800). Picture (FBL-ESP-LIGA) -- French Ligue 1: Marseille v Nice (2000). Picture (FBL-FRA-LIGUE1) -- Scottish Premiership (both 1800): Celtic v Aberdeen, St Mirren v Hamilton (FBL-SCO-PR) -- English Championship: (1900 unless stated): Coventry v Norwich, Millwall v Birmingham, QPR v Brentford, Swansea v Nottingham Forest, Barnsley v Blackburn (1945), Bournemouth v Rotherham (2015) (FBL-ENG) TENNIS -- Women's top seed and home favourite Ashleigh Barty takes on Karolina Muchova in the quarter-finals of the Australian Open while Rafael Nadal goes toe to toe with Stefanos Tsitsipas for a place in the semi-finals of the men's event (from 0000). Coverage by Martin Parry. Picture (TENNIS-AUS-OPEN) ALPINE SKIING -- Team parallels at the ski world championships in Cortina d'Ampezzo (1115). Coverage by Luke Phillips. Picture (SKI-WORLD-ITA) BASKETBALL -- NBA regular season with 12 games including Atlanta Hawks at Boston Celtics. Picture (BASKET-NBA) afp