And Davis called a halt to the contest when another vicious combination forced the referee to intervene with only nine seconds of the round remaining.

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This combination of pressures forced her into a second's lapse when she scribbled her name on the form.

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Growing competition from electronic exchanges forced the two companies to consider a potential combination of business.

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Margarito finally forced Cotto to his knee after a hard combination and then continued to unload as his opponent staggered around the ring, finally going down a second time as the towel flew in.

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In Massachusetts, Mr Romney is introducing universal health care through a combination of sticks and carrots: everybody will be forced to buy health insurance, with poorer people getting subsidies.

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And when Australia captain Ricky Ponting introduced the seam-spin combination of Mitchell Johnson and Michael Clarke, Gambhir and Tendulkar were forced to go against their natural instincts by adopting a more defensive approach.

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