Paddy Lowe has been released early by McLaren so he will join Mercedes next month in a management role rather than in 2014.
Mercedes says it cannot rely Monaco's lack of overtaking opportunities to make up for its race-day tyre issues.
Lewis Hamilton says no stone will be left unturned when he visits the Mercedes factory later this week for a brainstorming session to cure the team's tyre woes.
Mercedes urged their many Formula One technical boffins to "think outside the box" and consider the unconsidered after a Spanish Grand Prix that left the team
Mercedes suspects that its tyre dramas are not being caused by an inherent problem with its car.
Nico Rosberg and Lewis Hamilton were right to be cautious after their qualifying high turned into another Sunday slump.
Force India says Paul di Resta's late chase of Nico Rosberg's Mercedes for sixth place in the Spanish Grand Prix was hampered by an external DRS problem.
Spanish Grand Prix poleman Nico Rosberg has admitted he was shocked at how quickly his Mercedes tumbled down the lap chart after his first pitstop.
Lewis Hamilton declared himself baffled by the extent of Mercedes' tyre struggles in the Spanish Grand Prix.
Ferrari's Fernando Alonso bounced back in the title race with victory in the Spanish Grand Prix.
Ross Brawn says Mercedes cannot be confident enough that it has sorted its tyre woes to rule out a repeat of its Bahrain Grand Prix woes in Spain.
Blocking penalties for Felipe Massa and Esteban Gutierrez mean slight changes to the starting order for the Spanish Grand Prix.
Nico Rosberg grabbed pole position with Lewis Hamilton second as Mercedes dominated qualifying for the Spanish Grand Prix.
Fernando Alonso described Ferrari's qualifying deficit at Barcelona as "no surprise" but is certain he can fight for victory in Sunday's Spanish Grand Prix.
Monaco Grand Prix
Spanish Grand Prix
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