Madrid, Spain (My Sportsbook) - Seve Ballesteros was released from a Madrid hospital Tuesday after undergoing a fourth brain operation last week.

"The patient, Severiano Ballesteros, has been discharged this morning by the Department of Neurosurgery and has already left the hospital," La Paz Hospital said in a statement. "He will continue to have outpatient treatment in the Departments of Radiotherapy and Medical Oncology."

The five-time major champion was diagnosed with a brain tumor in October following a collapse at a Madrid airport.

A valve was put into Ballesteros' brain last week to drain fluid and doctors also repaired a bone defect that was brought on by one of his previous three surgeries.

Ballesteros previously had part of the tumor removed in one surgery, then had part of his skull removed in a second operation. That procedure, known as a 'decompressive craniotomy,' was done to relieve pressure that was building on his brain.

His third surgery was necessary to remove the remnants of the tumor, which is suspected to be cancerous, as well as to reduce the swelling on his brain.

Ballesteros improved before last week's procedure and was allowed to return home for a period of time last month.

The Spaniard is the all-time wins leader on the European Tour with 50 and has totaled 87 career wins worldwide, including three British Open and two Masters titles. He has also accumulated a 20-12-5 record in eight Ryder Cup appearances, and was the captain for the victorious European Ryder Cup squad at Valderrama in 1997.