Liverpool make Alisson the world's most expensive keeper as they sign the Brazilian from Roma on a six-year contract for a reported £66.8m.
Check out the BBC Sport Live Guide for details of all the forthcoming live sport on the BBC.
Golf
The Open, 19-22 July
Cycling
Tour de France, 7-29 July
Cricket
Rugby league
Horse racing
Your essential sports diary
Watch highlights as American Kevin Kisner cards a five-under-par 66 to lead the way after day one at the 2018 Open Championship at Carnoustie.
Fri 20 July, 08:00 BST, BBC Radio 5 live sports extra
Fri 20 July, 08:50 BST, Connected TV and online
Fri 20 July, 10:00 BST, Connected TV and online
Fri 20 July, 09:55 BST, BBC Sport online
Fri 20 July, 12:00 & 17:30 BST, BBC Radio 5 live
Fri 20 July, 14:00 BST, BBC Radio 5 live sports extra
Olympic gold medallist Shona McCallin tells BBC Sport about her "brutal" concussion and how important it is to raise awareness.
Giuseppe Rossi has lost almost three and a half years of his career to knee injuries, he told BBC Sport about his determination to keep coming back.
Zharnel Hughes believes the current generation of British sprinters can compete with the world's best over 100m as he looks ahead to this weekend's Anniversary Games.
Team Dimension Data for Qhubeka rider Mark Cavendish, a winner of 30 Tour de France stages, takes us through each day of this year's three-week race.
England hockey player Emily Defroand and her mother Gill reflect on the journey and sacrifices it has taken to get her to the top.
In his first BBC Sport column, heavyweight boxer Tony Bellew outlines the conundrum he faces in deciding whether to fight again.
Who do you think should be in the England side for the first Test against India? Choose your XI and share it with your friends.
This week's sport on the BBC includes The Open, the German Grand Prix and the Anniversary Games in London.
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