Formula One race director Charlie Whiting has sent a letter to all teams to say that messages from drivers asking for advice, or from teams informing their drivers about the best options to make gains on the track, would no longer be tolerated.
In-form Premier League leaders Chelsea, with maximum points on the domestic front after four games, will be looking to repeat last season's display against Schalke 04 whom they beat 3-0 home and away. In another big game, five-time winners Bayern Munich, who made a third consecutive European semi-final last season, face off against English Premier League winners Manchester City for the third time in four years in the group stage starting in Munich.
Barcelona's run of six consecutive Champions League semi-finals was ended by a quarter-final exit to Atletico Madrid last season, but after starting his reign with three consecutive wins in La Liga, coach Luis Enrique refused to make any minimum requirement of his star-studded squad for this campaign.
Martin Crowe was first diagnosed with lymphoma in 2012, but after months of chemotherapy he said doctors had told him the cancer had shrunk to safe levels, although there was always the possibility of a relapse.