Lewis O'Brien: Middlesbrough midfielder to miss at least two months through injury - BBC Sport
Middlesbrough midfielder Lewis O
Regrets, recriminations and consequences one year from Huddersfield Town's play-off final loss - Steven Chicken - YorkshireLive
Get To Know: Lewis O'Brien - Middlesbrough FC
gatorbest, The Ole BallCoach
newsviwes: Sports news
Middlesbrough win comes at a cost with Michael Carrick 'fearing the worst' over Lewis O'Brien - Teesside Live
Writers from Oxford United's League One rivals preview the 2020/21 season
Journal The Times Sports - 6 January 2018, PDF, Liverpool F.C.
Chelsea 6-1 Middlesbrough (agg 6-2) - Carabao Cup semi-final: Live score, team news and updates as rampant Blues book Wembley date after scoring four first-half goals
Sports 11 November 2013 by WDPissuu - Issuu
Lewis O'Brien - Middlesbrough Midfielder - ESPN
Lewis O'Brien situation explained, Marcus Forss boost & Boro's anxious injury wait - Yahoo Sport