Welcome to The Radar, a Sky Sports column where Nick Wright blends statistics with opinion to illuminate the Premier League stories you need to know. This week’s agenda includes: - Is Arsenal’s back line continuing to improve?

- How Morgan Rogers is making an immediate impact for Chelsea - Hull City’s underrated defensive contributions - A player to keep an eye on this weekend The upcoming Sunday clash at the Emirates Stadium pits two of the league’s most polar opposite units: Arsenal, whose defence has yet to concede a goal this season, against Chelsea, whose attack has already produced seven goals in two fixtures. The contrast sets the stage for a classic showdown between the Premier League’s most disciplined defence and its most prolific offence. Both Arsenal and Hull City have managed consecutive clean sheets, a feat that defies the expectations placed on them at the start of the campaign.

Hull’s solidity has largely hinged on goalkeeper Konstantinos Tzolakis delivering top‑class performances, while Arsenal’s keeper David Raya has been less tested, facing only a single on‑target header from Jack Rudoni. Raya’s contributions last season were vital, but this year Arsenal’s collective ability to limit clear‑cut chances has been the standout factor. Since the beginning of last season, Arsenal have kept their expected goals against (xG) under 0.50 in half of their matches – 20 out of 40 games – a statistic that already includes their first two games of the current campaign.

No other side comes close: Liverpool sits second with eight such matches, Manchester City managed the figure twice last term, and Chelsea has just four. Supporters are understandably frustrated that Arsenal did not reinforce their attack during the transfer window, yet the defensive numbers underline a significant gap between them and the rest of the league when they are out of possession. Even without the presence of first‑choice centre‑back William Saliba and regular starter Jurrien Timber, Arsenal’s defensive framework has remained largely unshaken.

The club has indeed spent heavily on depth. Defender Ezri Konsa has logged only 11 minutes so far, while Cristhian Mosquera has stepped in confidently alongside Gabriel at centre‑back, and Ben White has filled the right‑back slot. In midfield, the arrival of Bruno Guimarães adds both steel and creativity, though he, like Konsa, is being eased into the side. The real engine behind Arsenal’s defensive resilience is the tactical structure imposed by manager Mikel Arteta.

Remarkably, the back four of Ben White, Mosquera, Gabriel and Riccardo Calafiori had never started a Premier League match together before the opening two games of this season, yet they have already displayed cohesion and discipline. Arsenal’s defensive solidity fuels optimism about their quest to retain the Premier League crown, even as they prepare for what may be their toughest test yet: a free‑scoring Chelsea side under Xabi Alonso. The encounter also offers a glimpse into what could have been for Arsenal had they secured Morgan Rogers, who ultimately chose Chelsea.

Watching Rogers from the press box at Stamford Bridge during Chelsea’s 4‑3 victory over Brighton, his impact was unmistakable. Operating on the left flank – a position where Arsenal appear thin – he beat two Brighton defenders to set up the Gunners’ second goal, then delivered a deft turn and a through‑ball that sparked Chelsea’s third. His blend of technical skill and physical power made him a highly sought‑after talent, and his performance against Brighton reinforced why Chelsea paid £117 million for him. Rogers has already contributed a goal and an assist, putting him behind only Manchester United’s Bruno Fernandes in combined shots and chances created across the opening two games.

Fellow Chelsea attackers Cole Palmer and João Pedro also rank highly, but they now face the challenge of replicating that threat against a more disciplined Arsenal defence. For Rogers, who slipped through Arsenal’s net, the match may serve as extra motivation. Turning back to Hull City, goalkeeper Konstantinos Tzolakis has posted an impressive xG against of 1.92, the best underlying metric among Premier League keepers after two games.

Yet it would be remiss not to highlight centre‑back John Egan, a 33‑year‑old former Sheffield United player who many thought had missed his Premier League window before Hull’s surprise promotion. Egan signed a new contract alongside five teammates and has already made his mark, registering 17 clearances in the opening win over Manchester United and adding another ten against Coventry. That averages to 13 clearances per match, the highest total in the division, underscoring his defensive influence. While Hull’s defensive numbers may lack aesthetic flair, they are undeniably effective, and they illustrate how a well‑organised unit can compete against the league’s heavyweights.

In other news, Everton’s lone striker Thierno Barry faces a daunting task against Manchester United after the club’s failed transfer pursuits – notably the sale of Beto and missed targets like Richardson and Folarin Balogun. Barry will carry the burden of expectation, but the odds are steep. This weekend, Sky Sports will broadcast four Premier League fixtures live. Friday night kicks off with Ipswich versus Liverpool, followed on Saturday by Hull hosting Aston Villa.

Sunday’s double‑header features Everton at Manchester United at 14:00, and the headline clash of Arsenal versus Chelsea at 16:30. Previous columns have examined United’s vulnerability to set‑pieces and the growing threat posed by Ethan Ampadu’s long throws, topics that remain relevant as teams prepare for the weekend’s action. Finally, fans can try their luck in the Super 6 competition for a chance to win £1 million – entry is free, and the prize could turn a regular matchday into an unforgettable one.