Boca Juniors' 1-0 first-leg lead reshapes the result market: a cautious away performance that aims to protect a slender advantage is the most realistic script. That changes how to think about Draw No Bet and low-margin Asian lines because Boca can win the tie without chasing the game; most previews price them as the safer option for this second leg. A majority of tipsters — including Gainblers and MatchMoney — back a low-scoring outcome, and the balance of probability favours markets that pay less but require fewer events (clean sheets, low totals).
The goals angle sits naturally next. Several analysts (Gainblers in multiple languages, Rekatochklart) point to Under 2.5 goals at odds in the 1.60–1.65 band. O'Higgins must press and commit numbers forward to overturn the deficit. That urgency should create half-chances and shots from distance rather than an open, high-quality exchange. Boca's game management and a habit of sitting deep in continental away legs make a sub-2.5 match more likely than not despite home pressure.
A contrasting angle comes from a minority of sources and the tactical shape the tie can take: both teams to score. Redgol's preview highlights attacking players on both sides and quotes BTTS near 2.6. If O'Higgins' intensity forces space on transitions and Boca pick one or two rapid counters, the match can produce goals at either end while still staying below three goals. That combination — both teams score, total under 3 — is an attractive alternative if market prices for straight BTTS remain generous.
Finally, the outright upset remains viable but long-priced. O'Higgins to win requires them to convert pressure into a one-goal victory (or more). Expect heavy possession for the hosts but relatively few clear-cut chances; set-pieces and individual errors will be decisive. A clear majority of analysts prefer conservative lines like Under 2.5 and Draw No Bet for Boca, with one notable outlier advocating BTTS at longer odds.
Given the tie context and consensus, the market favours containment and small margins; the most persuasive trades will reflect that balance between home urgency and away containment.