Continuing his blazing form, David Warner struck a scintillating hundred to guide Australia to a comfortable three-wicket victory over England in the opening match of the tri-nation One-day cricket series at Sydney on Friday.Batting first, England never really got the momentum after a top-order collapse despite skipper Eoin Morgan's brilliant counter-attacking 121 which took the team total to 234 in 47.5 overs. None of the other England players even crossed 30-run mark. In reply, Warner's 115-ball-127 laid the foundation as Australia scored the required runs in 39.5 overs which ensured a precious bonus point for them, having achieved the target within 40 overs.