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<blockquote data-quote="tynimiller" data-source="post: 1073031" data-attributes="member: 6578"><p>Let me double check - I will admit I've had so many issues with ESPN accuracy I typically usually cite Pro Football Reference which has the 78.2</p><p></p><p>[ATTACH=full]21726[/ATTACH]</p><p></p><p>Be curious to see what ESPN does and if different formula than Pro Football Reference. The odd thing is their ratings match identically.....</p><p></p><p>Really odd.</p><p></p><p>Discovered why: ESPN does in fact use different calculation. Whether true or not this is what I found:</p><p></p><p><strong><a href="https://www.espn.com/" target="_blank">ESPN</a>'s Total QBR</strong> is a complex, proprietary formula designed to evaluate a quarterback's complete performance, including passes, runs, penalties, and fumbles. It attempts to credit the quarterback for their contribution on a play-by-play basis using a metric called Expected Points Added (EPA). </p><ul> <li data-xf-list-type="ul"><strong>Contextualized plays</strong>: Not all yards are treated equally. A 10-yard pass on 3rd-and-2 is valued higher than a 10-yard pass on 3rd-and-14, as the former is a successful play that keeps the drive going.</li> <li data-xf-list-type="ul"><strong>Non-passing plays</strong>: A quarterback's rushing performance, including designed runs and scrambles, is factored into the rating.</li> <li data-xf-list-type="ul"><strong>Adjustments</strong>: The formula adjusts for the strength of the opponent's defense, the game situation (e.g., garbage time is weighted less), and the difficulty of the throw, such as pressure in the pocket.</li> <li data-xf-list-type="ul"><strong>Credit allocation</strong>: For each play, QBR attempts to divide the credit for a successful play between the quarterback and their teammates. For example, a quarterback gets less credit for a short screen pass that the receiver turns into a long gain.</li> <li data-xf-list-type="ul"><strong>Scale</strong>: QBR is presented on a 0–100 scale, with 50 being an average performance. </li> </ul><p><strong>Pro Football Reference's QB Rating</strong> displays the official <strong>NFL Passer Rating</strong>, a much simpler metric based on a publicly known formula that only uses passing statistics. </p><ul> <li data-xf-list-type="ul"><strong>Basic components</strong>: The formula calculates four separate components: completion percentage, yards per attempt, touchdown percentage, and interception percentage.</li> <li data-xf-list-type="ul"><strong>Equal weight</strong>: The NFL Passer Rating treats all passing yards, touchdowns, and interceptions with equal weight, regardless of the situation in the game.</li> <li data-xf-list-type="ul"><strong>No other contributions</strong>: The formula does not account for quarterback rushing, fumbles, sacks, or penalties.</li> <li data-xf-list-type="ul"><strong>Scale</strong>: The official NFL formula operates on a scale from 0 to 158.3, with 158.3 being a perfect rating. </li> </ul></blockquote><p></p>
[QUOTE="tynimiller, post: 1073031, member: 6578"] Let me double check - I will admit I've had so many issues with ESPN accuracy I typically usually cite Pro Football Reference which has the 78.2 [ATTACH type="full"]21726[/ATTACH] Be curious to see what ESPN does and if different formula than Pro Football Reference. The odd thing is their ratings match identically..... Really odd. Discovered why: ESPN does in fact use different calculation. Whether true or not this is what I found: [B][URL='https://www.espn.com/']ESPN[/URL]'s Total QBR[/B] is a complex, proprietary formula designed to evaluate a quarterback's complete performance, including passes, runs, penalties, and fumbles. It attempts to credit the quarterback for their contribution on a play-by-play basis using a metric called Expected Points Added (EPA). [LIST] [*][B]Contextualized plays[/B]: Not all yards are treated equally. A 10-yard pass on 3rd-and-2 is valued higher than a 10-yard pass on 3rd-and-14, as the former is a successful play that keeps the drive going. [*][B]Non-passing plays[/B]: A quarterback's rushing performance, including designed runs and scrambles, is factored into the rating. [*][B]Adjustments[/B]: The formula adjusts for the strength of the opponent's defense, the game situation (e.g., garbage time is weighted less), and the difficulty of the throw, such as pressure in the pocket. [*][B]Credit allocation[/B]: For each play, QBR attempts to divide the credit for a successful play between the quarterback and their teammates. For example, a quarterback gets less credit for a short screen pass that the receiver turns into a long gain. [*][B]Scale[/B]: QBR is presented on a 0–100 scale, with 50 being an average performance. [/LIST] [B]Pro Football Reference's QB Rating[/B] displays the official [B]NFL Passer Rating[/B], a much simpler metric based on a publicly known formula that only uses passing statistics. [LIST] [*][B]Basic components[/B]: The formula calculates four separate components: completion percentage, yards per attempt, touchdown percentage, and interception percentage. [*][B]Equal weight[/B]: The NFL Passer Rating treats all passing yards, touchdowns, and interceptions with equal weight, regardless of the situation in the game. [*][B]No other contributions[/B]: The formula does not account for quarterback rushing, fumbles, sacks, or penalties. [*][B]Scale[/B]: The official NFL formula operates on a scale from 0 to 158.3, with 158.3 being a perfect rating. [/LIST] [/QUOTE]
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