 Junior IBSA blind sailing events sometimes allow for B4 competitors in international events.In blind cricket, B1, B2, B3 and B4 cricketers all play at the same time, but a maximum combined total of seven B2, B3 and B4 cricketers are allowed on the field at one time.Scottish Blind Golf gives golfers in this classification a maximum handicap of 28 for men, with the handicap for women being slightly higher.