The US stock market surged in early trading as political consensus appeared to be building towards a solution to the US debt crisis.
The Dow Jones industrial average, Standard & Poor's 500 index and Nasdaq composite all rose by between 1 and 1.3 percent in late morning trading.
More top news
The former footballer said 'unbelievable' paranoia during his drug addiction led him to believe his Rolex watch was "listening" to him.
Devon Staples had been drinking during Independence Day celebrations when he placed a fireworks on the top of his head and lit the fuse.
World Number 4 Murray has won their previous five encounters, but Karlovic tops the tournament's aces leaderboard so far.