Portugal and USMNT open World Cup week against unfamiliar opposition — and the betting market is treating both as heavy favourites

Portugal and the United States both step into the 2026 World Cup's opening week on Wednesday and Friday respectively, and if the betting market is to be believed, both fixtures will resolve as formalities. SportsLine handicapper Martin Green has installed Cristiano Ronaldo's Portugal as a heavy favourite over DR Congo in Wednesday's Group K opener, and pegged the United States as a similarly comfortable favourite against Australia in Friday's Group D clash. Green enters the week on an 18-8 run across his last 26 World Cup picks, a sample large enough to take seriously but short enough to flag.

The substantive question for this World Cup is not who wins the group-stage matches the market already expects the favourites to win — it is whether the margins the bookmakers are pricing in are realistic. Portugal are a side with the deepest attack in the tournament; DR Congo are the African champions, unbeaten in qualifying and physical in a way European sides consistently underestimate. The United States, playing at home, are priced as comfortable favourites over an Australian team that knocked European sides out of contention at recent tournaments. Both spreads are real, and both are probably narrow than the published line.

Portugal vs DR Congo — Wednesday

The fixture is a generational mismatch on paper. Portugal arrive as a top-ten FIFA-ranked side featuring Ronaldo, Bruno Fernandes, Rafael Leão and Bernardo Silva. DR Congo arrive as the CAF Champions of a qualifying campaign that saw them lose twice but concede an average under a goal per game. The betting line reflects the gulf — Portugal are roughly two-goal favourites on the Asian handicap, with the moneyline short enough to be unplayable for serious bettors.

The case for caution is straightforward. African champions at World Cups have historically been priced as long shots they no longer are. Morocco reached the semi-finals in Qatar. Senegal beat France in 2002. DR Congo's qualifying record suggests a side capable of absorbing pressure and punishing mistakes in transition. Green notes that the African champions have covered the spread in their last two World Cup openers.

USMNT vs Australia — Friday

The United States enter their home tournament as the most scrutinised host side in World Cup history. Manager Mauricio Pochettino's squad selection has been debated for months. Folarin Balogun has emerged as the starting No. 9. Australia are an opponent the United States have beaten regularly but never by comfortable margins at senior level.

Green's pick tracks the market consensus: the United States as favourites on both the moneyline and a goal-and-a-half spread. The counterpoint is Australia's tournament habit. Graham Arnold's side have played in the knockout rounds of the last two World Cups and enter this tournament with a settled spine and a deep squad. The Socceroos are not the side the betting market prices them as.

What the numbers actually say

An 18-8 run across 26 picks is a 69 percent strike rate — strong by any handicapping standard, particularly on World Cup matches where bookmaker lines are sharpest. It is also a sample small enough that regression is the most likely outcome over the next 26 picks. The market knows who Martin Green is; lines adjust accordingly. The honest read of an 18-8 run is that the record is real and the edge, if any, is shrinking.

The structural read

World Cup betting markets are among the most efficient in sport. The lines on Portugal and the United States in these two fixtures are not generous because the bookmakers are charitable; they are generous because the market has absorbed every piece of information — squad announcements, injury reports, weather forecasts, venue familiarity — and arrived at a number. When a respected handicapper picks the favourite anyway, the move is less a hot take than a confirmation of price. The substantive opportunities this week, if they exist, are on the totals and the Asian handicap rather than the moneyline.

The nuance the picks do not capture: both matches are opening fixtures of a tournament, and opening fixtures produce a disproportionate share of draws and narrow scorelines. Teams play cautiously. Favourites press late. Underdogs sit in. The pattern across the last four World Cups is that the favourite wins the opener roughly 60 percent of the time, but the favourite wins by more than one goal less than 30 percent of the time. The market knows this and prices it in. The bettor who wants to beat the market this week needs to find a number the market has mispriced. SportsLine's Martin Green is publicly confident both favourites oblige.

Desk note: Monexus treats published betting lines and handicapper records as data points, not tips. Where this piece diverges from a wire preview is in stress-testing the favourite line against the opening-match tournament base rate — a frame the standard preview does not provide.